Making a constraint in a select multiple question that does not allow to enter 2 options form a list of choices

I would like to be able to write a validation constraint on a multiple selection type question;
Example :
professional situation
To respond :
I would not like to be able to give the possibility of choosing in certain cases unemployed and working but the constraint to use does not accept the choices offered

Welcome back to the community, @sylvestresilasiloga! Maybe this post discussed previously should solve your issue:

And this one too:

Thank you very much it works well
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