Need some specific permissions set-up

Need some specific permissions set-up

Greetings,
 
       I'm am creating a calendar for a small group of people, and I need to have some people be able to create and edit their own personal events, but have nothing more than read access to events created by anyone else.
 
      Currently, it appears that there is an all or nothing permissions set-up. Give users access to everything at all times for everyone for any reason, or the opposite, give users no access to nothing for nobody for no reason.
 
      I'd like to having something a little more grey, is that possible?
 
 
Stuart