add group membership area to exisiting wordpress site

I am building a website using WP Enfold theme. The client wants a membership area with the following functionality: -Individual businesses sign up for Group memberships for their employees to access weekly content -Employees can easily log in, potentially with a code, to gain access to their group area. -No payment gateway required as payment will be done face-to-face and over the phone -Learndash is installed for the member area content but may not be the right solution - I am open to ideas - I am not looking for the content to be added, we will do that once the membership area is set up