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    ```html

    Newsletter: Edit Schedule

    Provides a form to edit a schedule. Accessed through the Schedule Administration.

    Features

    • It is an administration interface

    Screens

    Edit Schedule
    • Model (identifier, required field) : The model that will be used by the schedule.
    • State (integer, required field) : The state of the schedule, which can be "Enabled" or "Disabled".
    • Start Date (date, required field) : Start of the period for sending the newsletter.
    • End Date (date) : End of the period for sending the newsletter. If not specified, the period will be indefinite.
    • Send Time (time, required field) : The time for sending the newsletter.
    • Type (integer, required field) : The frequency of sending the newsletter, which can be "Daily", "Weekly", or "Monthly".
    • Day of the Week (integer) : The day of the week for weekly schedules.
    • Day of the Month (integer) : The day of the month for monthly schedules.

    Permissions

    • Manage: Allows managing models, categories, schedules, and subscriptions of the service instance.

    Actions

    • Update Schedule : Updates the existing schedule entry.
    ```