Conditional messages and e-mail

Hello,
Should it possible to have messages and email content based on event category in order to only display relevant messages related to the catagory?
Thanks in adbance for your reply 

Hi Jean

Could you please explain more details about your request? It is not very clear to me

Tuan

Hello,
I use events booking in a sports club with different activites (hiking, scuba diving, sailing...)
I use customized fields (some of them come from Community Builder) and event categories based on these activities
I should want be able to display the customized fields fields depending on the event Category.
Thanks in advance