add eligibility profile grayed on life event configuration

Hello,

We need to add life event into one of the benefits, which would exclude employees that reached certain age.

I'm trying to set a life event with type personal ( age derived is not visible on the list, we have another life event with that type). In person changes tab I added the person change ,,Age Change''. I think I also need to add the eligibility profile of ,,over 62 years'' which we have configured, but the ,,add eligibility profile'' on Eligibility tab is grayed