[PAID] Turn notifications ON for all Posts

[Wilo]

Hi,

Using SMF 2.0.2

I would like a button/link specific to each membergroup which when clicked allows members to join that particaulr memebrgroup, and then turns notifications on for all boards accessable from that membergroup.

For example.

I have a membergroup called Golf which grants access to 2 boards discussing golf.  If a member joins that membergroup any further topics or discussions about golf that take place during their membership will trigger notification emails.  They have to 'opt out' of notifications on each board/discussion.

Many thanks,

W.