I use as prefix M_ E_ T_ A_ ( for Mission, Event, Trigger and Action so I can even use the same name for all of them if they are related to each other), as name I use always a description and I have an Excel file with a list of all META I'm using in a scenario design.
So if I want to create an event which activates an air mission attack on a convoy.
I create mission M_Attack_Convoy (with status inactive), then I create an Event named E_Attack_Convoy, the trigger (of any kind) will be called T_Attack_Convoy and the Action which change M_Attack_Convoy status to active will be named A_Attack_Convoy; this I way I have track of even dozens of events.