Dear Client!
I read your description carefully and I'm very interested in your project.i have already done this project.i can show demo when we connect.
1. it can collect bulk member from other groups
2. Able to add then in source group.
3. you can save more than 50 accounts and you can run all accounts at a time.
4. it's a windows application.
I am ready with script also, you can directly use.
Awaiting your positive reply.
Thank you,