References: Configuring Events
Repeating Series are a useful way to manage events/booking/sessions that occur with a regular frequency. However very long series become cumbersome to manage so our recommendation is to only create series with 10-15 iterations.
A common problem, if you have followed that advice, is the need to create another series just the one that has finished. The procedure below shows how to perform this:
Find an event from the series you wish to continue (any event in the series will do)
Duplicate the event
Edit the cloned event to have the correct start date and time (note the name will be "Copy of..." and will need editing
The cloned event is still part of the old series. From the "Dates and Recurring" pane choose to "make a stand-alone event"
From the same pane you can now create the new repeating series with your desired frequency
Note: Extending a series as a simple command is a task in our roadmap.