ReCap projects can be shared with one of three permission levels. These levels provide a specific sets of functionality to the intended collaborator.
Access level can be managed when adding new collaborators, or once invitations have been successfully sent. A drop-down UI allows you to specify the level of access you wish to provide in both states.

Invite New

Collaborator List
Note that you can also remove collaborators from this drop-down in the collaborator list.
Permissions on the web application can be modified in a similar fashion, but from the sharing dialog.

Invite New

Collaborator List