1. Click on Add New Members>Add Manually.
2. Add the details and click submit. Please note that if you don't have a member ID, you can use their email.
3. You can now either add more members - or click on "Invite Members Later". Additionally, you can add them to a group or select the member(s) and click on "More Actions>Add to group" and then select the corrects group/s.
4. Click on "Send Invites" to invite the newly added member. Furthermore, if you have any other members to be invited, they will show up here.