In the Calendar, click on a session belonging to the series or recurring schedule you want to change. Then click on "Edit" at the top right.
If you want to change a series, it is important to indicate under 'Edit option' that you want to change the series of the session and not just the session.
Shorten sequence or schedule
If you created a series or schedule based on the number of sessions or end date or have created a continuous schedule, you can easily shorten the series or schedule by entering a new end date under "Repeat until". PLEASE NOTE: the existing sessions after the new end date will be cancelled and, if applicable, credits will be returned to clients.
Extend series or schedule
If you created a series or schedule based on an end date, you can specify a new end date at "Repeat until " to extend the series. You can also choose to make the series or schedule continuous by selecting the option "Continuous" under "Repeat until". After saving the changes, new sessions are created in the calendar.