Can users be added manually rather than them having to sign-up?

Hello,

I am building a site which uses the Membership plugin, and for the 1st phase of the project new members won’t be allowed o sign-up on the site themselves. Instead, admin staff will have to add new users manually on the back-end.

So, 2 questions

1) What is the best way for admin staff to manually add users, keeping in mind that not all users will be added with the same access levels? I can’t see an option within the plugin’s options to manually add users.

2) We have an existing database of users from the current/soon-to-be-old site which will need to be added to the Membership system in bulk. Can users be added to Membership (again with different access levels) programmatically? Can you please point me towards some documentation or example code?

Many thanks,

Shaun