Here is how you set up a custom recurring event:
Tap the + button.
Add the event title.
Select who the event is for — you, your partner, or shared.
Set the start and end time.
Scroll down to Repeat and tap the arrow on the right.
Select your recurrence interval. If the option you need isn't listed, tap Custom at the bottom.
If using Custom, tap the arrow next to Frequency and select how often it repeats, then tap each day you would like the event to occur.
Tap End Repeat and select an end date or Never.
Tap the Save button in the top right-hand corner.
You will now have the recurring event set up in your Cupla calendar.