For extra functionality, Love Factory can integrate Chat Factory for Instant Messaging.
The access to Chat Factory is handled via the Membership Plans in Love Factory. After installing both extensions you will have the option to enable Chat Factory for users in the Integration setup page from the admin backend.
Only users with Chat Factory enabled for their membership can use it. To activate only for certain memberships, just go to the Memberships page from the backend and choose the desired membership, and then enable Chat Factory access.
If you are experiencing issues with permissions, resave your memberships after checking the Apply to all sold memberships? checkbox.
(!) Documentation based on Love Factory version 4.4.9