Link objects and actors to activities

[remco.boksebeld]

Hello

At the moment i'm busy as an business analist and since i was useing EA as a system analist i want to use EA to model the business.
This works fine i made an activity diagram to show the process flow per activity I can create requirements (or link overal requirements to an activity).
But now comes the next part i want to register which data objects are used by an activity (and when it is possible even what is done with the data create, read, update or delete) and besides that i want to register which actors can preform an activity.

How can i do these things (register which objects and actors are involved in an activity)?