Adding Members Bulk (Membership 2)

I have locked-down my site so that it is only available to "members". I have done this through Membership 2 Pro.

I have over 100 members I plan to add manually.

I am able to add 15 "users" in bulk (users > add new users).

Is there a way to assign a membership level in bulk as well? My current process is not ideal. I want to shorten this process if possible:

1. Add 15 new users
2. Go to Membership 2 > Add Member.
3. From there I have to add each one at a time, and assign membership and membership period.