How do I disable event sheets

How I shall ban it the not selected characters the lists of an event?

There is a boxer in a game many fighters.

They are for these fighters event their lists.

The not selected fighters let the system not start the lists of an event unnecessarily because he squanders the resources only so.

I don't have Construct 2 in front of me, so I don't know if you can disable entire event sheets, but you can put the events in a Group and then disable or enable the group as you want. You could have each fighter in their own Group, have them all disabled, then when a fighter is picked, that fighter's Group is enabled.