Greeting,

I currently have a customer portal running for external logins.

Is there/what would be the best way to test permissions on external users to be sure the individuals are seeing the expected data?

Would it be possible to create a report of a list of accounts that the invidual has visibility into?

I have two users.  User 1 sets up an Event and updates the content and participants.  User 2 then wants to go in after the fact and update the event created by User 1.  
 
Is there a way to setup security to allow this?  Both user 1 and user 2 have the same Profiles.  
 
Is there a way to setup their profiles to let User 2 update the Event created by User 1?