Constraint in mutliple choise and begin repeat

Hello dear friends

I’m in begin repeat and want to constraint in multiple choices that help to avoid choosing the same items

Example of a training course that takes place in 2 sessions over 5 modules (mod_1; mod_2; mod_3; mod_4; mod_5)
When the interviewer says that the training took place in two sessions, he must tick different modules for session 2 than those ticked for session 1.

Could you help please

Welcome to the community, @niang_wv! Maybe a cascading selection would suit your needs here. You should be able to learn more about cascading selection through this support article Adding Cascading Select Questions.

This community post discussed previously should also be able to help you solve your issue:

Thank you very much for your reply. I’m actually looking for a solution for the opposite.

I want Option 2 and Option 4, which are not selected in Q1, to be displayed in Q2.