I cannot include members in the agenda

Hello,

I am trying to complete the agenda for this week and the software doesn't allow me adding members to it. I've tried deleting the entries and doing them again to no success. Members can add themselves, but I need to add those who are already counting on me to do it.
Attached is the picture I took of the screen
Thank you for your help,

Ana Geldres
Club 3767

You already have Contestant #1, Contestant #2 and Contestant #3 assigned in the first contest. As the role titles are the same, the people assigned in the first contest are automatically assigned to the same role further down the agenda.

Try renaming e.g. Evaluation_Contestant #1 & International_Contestant #1 or 1stContestant #1 & 2ndContestant #1

It worked! Thank you.

Ana