With Repeating instruments, you can collect the same data multiple times. This function can be used for collecting data e.g. about the adverse effects of medication or when creating a recurring survey.

First create the instrument, that you want to be repeated. In this example it is Adverse Effect instrument.

Then go to Project Setup page and there Designate Instruments for My Events and indicate in which events you want to use the instrument  (e.g. Adverse Effect Month 1 Visit and Month 2 Visit):

Then click again Enable in the Project Setup page where you have Repeating instruments:

Allow repetition of the instrument: