How to use Group Leads to approve Facebook group members Individually
You can now approve new members individually by clicking the Approve button next to a member’s name.
Note: The APPROVE button must be turned to red color - it's a sign that the extension is working.
When you click this button, you won’t see any Group Leads approval popup but the data of the member would be dropped into your google sheet.
In addition to that, if you check your email marketing autoresponder, you would see the email submitted by the new members while they join your group.
I hope this helps.