Affiliate Access To Dashboard

I've installed the Affiliate plugin as directed.

Now, I'm trying to give an affiliate access to the Dashboard in the admin area. This does not seem to be possible using the Affiliate plugin itself.

Do I need to create a new role - Affiliate - where by I assign certain capabilities to that allows the user to access the Dashboard? If so, this should be considered a feature request.

OR, do I need to use another plugin e.g. Membership to control user access?

I am interested to know what method wpmudev uses to give users access.

Any advice would be greatly appreciated.

Thanks, JD