Inviting Group into Main Land Group

Is there a script whereby I can invite a group of 900 that plays on my sims into the main land group?

I could send an attachment via a notice

The main land group isn't open to all as it is the land group, but i need it to be open to this group .

I hope that makes the problem clear!

scripts that i have come across are either no transfer, so i couldn't send out in a notice

or able to work with an 'open' group which my land group isn''t!


I await responses!

You'll need a bot (custom client) or some diligent helpers if you don't want to do this by hand.