Migration is a process in itself. Check this link for the full breakdown of migrating members from another system
Migration Best Practices
Through Landing Pages
This is the easiest method to add members into your system, because the member does all of the work! You will just need to find the link for the landing page of the plan you want to add, then either send it directly to the member or post the link on your site.
Manually Adding Members From Your Dashboard
Adding members through this method takes the most work, but is still an easy process.
From the 'Members' list, select the '+ Add New Member' option
2. Next, fill in the appropriate member information
3. If have the member's credit card info, you can add a membership plan to the member and charge their card.
If you do not have their credit card information accessible, you'll need to stop the process here, and send the member a request for a new credit card.
Once they add a credit card to their profile, you can assign plan to them.