considering purchasing

[Former user]

upgrading a website from older C5 version to the newest 5.8 version of C5. have commerce plugin for older c5. users can purchase access to a password protected area of the website where they have access to registered user content. when they buy, they get added to specific groups, those groups have specific permissions that grant access to pages of the site. can I assign users that buy a "product" to groups with your commerce plug in??