You can make 1000000+ members in your group only if you have access to accounts with many friends. Or you can even add a lot of members to your group using your friend's account. Here's how:
Add a comment below with your GroupName followed by your group link!
Share this post in as many groups as we have a large number of members, confirm this operation and we will automatically send you the promised members!
Add at least 1000 friends in the link above!
RESPECT!