Guidance for configuring advanced appointment scheduling for a vaccination center

  • Release version: Xanadu
  • Updated August 1, 2024
  • 5 minutes to read
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    Summary of Guidance for Configuring Advanced Appointment Scheduling for a Vaccination Center

    Advanced appointment scheduling configuration in a vaccination center allows administrators to set appointment durations, daily schedules, holiday schedules, and capacity parameters. This configuration determines available appointment slots and location capacity, enabling users to book appointments accordingly. Careful management of these settings is crucial, as changes can affect both existing and future appointments, potentially causing overbooking or invalidations.

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    Key Configuration Areas and Recommendations

    • Appointment Configuration Form:
      • Name and Description: Safe to modify without impact.
      • Holiday Schedule: Avoid adding new holidays or modifying existing holiday schedules if appointments already exist, as it invalidates appointments.
      • Appointment Duration: Do not change once appointments exist, to prevent overlapping slots and overbooking.
      • Lead Time: Can be changed safely without affecting existing appointments.
      • Future Bookable Max Days: Can be increased safely; do not decrease to avoid invalidating booked appointments.
      • Reschedule or Cancel by Time: Change cautiously, ensuring no workflows impact existing appointments.
      • Active Status: Do not deactivate while appointments exist; reactivating is safe.
    • Vaccination Schedule Form:
      • Name: Safe to change.
      • Start Date: Do not increase to avoid invalidating appointments; decreasing is allowed only without slot overlaps in related schedules.
      • End Date: Do not decrease to avoid invalidating appointments; increasing allowed if no overlaps occur.
      • Appointments per Window: Increasing is safe; do not decrease when appointments exist to prevent overbooking.
      • Daily Start and End Times: Do not modify start time if appointments exist; increasing end time is allowed if other related values remain unchanged; do not decrease end time if appointments exist.
      • Bookable Days: Adding days is safe; removing days with existing appointments invalidates them.
      • Include Daily Break: Do not change checkbox status or break duration; avoid setting break times equal to daily start/end times to ensure slots are generated.

    Practical Impact for ServiceNow Customers

    When configuring advanced appointment scheduling for vaccination centers in ServiceNow, it is essential to apply these guidelines to maintain appointment integrity and avoid conflicts. Administrators should:

    • Plan schedule and slot configurations carefully before booking appointments.
    • Avoid making disruptive changes after appointments are booked, especially to durations, holiday schedules, and capacity settings.
    • Use safe-to-change fields like name, description, lead time, and certain date extensions to adjust configurations without risking appointment invalidation.
    • Monitor overlapping schedules and slot capacities to prevent overbooking.
    • Understand that improper changes can cause invalid appointments, leading to operational disruptions and customer dissatisfaction.

    Following these recommendations ensures reliable appointment availability management, helping vaccination centers operate efficiently and providing a good user experience for appointment booking through ServiceNow.

    Advanced appointment scheduling configuration enables administrators to configure appointment durations, daily schedule, holiday schedule, and so on. This configuration is used to identify the available slots as well as a location’s capacity for a given day and enable users to select appointment slots based on the parameters that you configure.

    Be mindful that changing some of the configuration values for a finalized vaccination center configuration can have undesired side effects on both existing and future appointments.

    The following forms and tables provide some helpful guidance for handling advanced appointment scheduling configurations for a vaccination center and some of the impacts of making certain changes. However, this guidance does not address an exhaustive list of all possible side effects.

    Figure 1. Vaccination Appointment Configuration form
    Vaccination Appointment Configuration form with various fields to fill. For information on the fields available on the form, see the Vaccination Appointment Configuration form section that follows.
    Table 1. Vaccination Appointment Configuration form

    Field

    Recommendation and Impact

    Name

    You can change the name field without causing undesired side effects.

    Description

    You can change the description field without causing undesired side effects.

    Holiday schedule

    Do not add a new holiday schedule when there are existing appointments in the current location. It invalidates existing appointments. Do not add more holidays to the existing holiday schedule. New holidays may already contain booked appointments.

    Appointment duration
    • Do not modify the appointment duration when appointments have already been created in the current location.
    • Impact: Changing the total capacity of a location causes overlapping slots that result in overbooked appointments.
    • For example:
      1. In your old configuration, if the appointment window was 5 minutes, the daily schedule would have looked like: 9:00 to 9:05, 9:05 to 9:10, 9:10 to 9:15, and 9:15 to 9:20. In this configuration, you have appointments booked from 9:00 to 9:05 and from 9:05 to 9:10, and appointments available from 9:10 to 9:15 and from 9:15 to 9:20.
      2. If you create a new configuration with an appointment window of 10 minutes, then your daily schedule would look like: 9 to 9:10, 9:10 to 9:20 with available slots from 9:10 to 9:20, and actual slots are displayed in the same 10-minute increments.
      3. The configuration change causes an overbooking in the 9:00 to 9:10 slot, because it was booked for two appointments in the previous configuration.

    Lead time

    You can change the lead time value without impacting any existing appointments.

    Future bookable max days
    • Do not decrease the value because appointments may have been booked on the last day in the current location. Decreasing the value invalidates appointments booked on the last day.
    • You can increase the value without impacting any existing appointments.

    Reschedule or cancel by time
    • You can conditionally change the value.
    • If there is any work flow that impacts existing appointments or users, it is not safe to change the value.

    Active
    • Do not deactivate the configuration when there are existing appointments. It invalidates existing appointments.
    • You can activate the previously inactive configuration without impacting any appointments.
    Figure 2. Vaccination Schedule form
    Vaccination Schedule form with various fields to fill. For information on the fields available here, see the Vaccination Appointment Configuration form section that follows.
    Table 2. Vaccination Schedule form

    Field

    Recommendation and Impact

    Name

    You can change the name field without causing undesired side effects.

    Start date
    • Do not increase the value because appointments may be booked between the old start date and the new start date. Increasing the value invalidates appointments booked between the old start date and the new start date.
    • You can decrease the value only when there are no overlapped slots configured in the other schedule under the same appointment configuration.
    • For example:
      1. Say that your old schedule has a start date of April 8, 2021 and bookable days from Monday to Friday from 09:00 to 18:00.
      2. Suppose that you created another schedule under the same appointment configuration which has a start and end date of March 1, 2021 to March 31, 2021.
      3. Now, if you change the schedule start date to March 31, 2021, it creates an overlapped bookable slot with the existing schedule on March 31, 2021 and the system will create an error.

    End date
    • Do not decrease the value because appointments may be booked between the new end date and the old end date. Increasing the value invalidates appointments booked between the new end date and the old end date.
    • You can increase the value only when there are no overlapped slots configured in the other schedule under the same appointment configuration.

    Appointments per window
    • Do not set the number of appointments per window to 0.
    • You can increase the number of appointments per window.
    • Do not decrease the number of appointments per window for a service configuration when appointments have already been created.
    • Impact: Reducing the total number of appointments per window results in overbooked appointments per slot for the appointments that were created before the change.
    • For example:
      1. Old configuration: You had 4 appointments per window. If the total number of windows = 2, then your total capacity is 2*4, or 8. If you had 4 appointments created per slot, the total capacity used is 4*2, or 8.
      2. New configuration: You have 2 appointments per window. If you have two total windows, then your new total capacity is 2*2, or 4. But if you had 4 appointments already created per slot (based on a past configuration), then your total capacity is 4*2, or 8.
      3. With this configuration, the total capacity, 8, exceeds the new total capacity of 4, causing overbooked appointments.

    Daily start time

    Do not modify the daily start time when appointments are already present. Modification creates overbooked slots and invalidates previous appointments.

    Daily end time
    • You can increase the daily end time. The increase is only valid when the appointment duration and daily start values are not changed.
    • Do not make the daily end time earlier when appointments are already present. Doing so creates overbooked slots and invalidates previous appointments.

    Bookable days
    • You can add days without impacting existing appointments.
    • Removing the bookable days when appointments have already been created invalidates past appointments.
    • For example:
      1. In your old configuration, suppose that Saturday is bookable and appointments are booked on Saturday.
      2. If you create a new configuration in which Saturday is not bookable, any appointments previously booked for Saturday are no longer valid.

    Include daily break
    • Do not change the value of the Include daily break check box.
    • Do not add the daily break time if this check box is cleared.
    • Do not change the duration of the break.
    • Do not set the break start time and end time to be the same as the daily start time and daily end time because it will not generate bookable slots.