I am new to drupal 7 and was willing to implement something like time based unsubscription from a OG Group.
I have users added in OG Group. I want to implement time based unsubscription of the users already added in the group say 'Computers'.
User say 'Tony' is added to the group 'Computers' today, now I wish that a user 'Tony' should be unsubscribed from the group 'Computers' after a subscription of 3 months (a specific time period).
A Notification message should be sent to user 'Tony'.
All the process should be based on systems current date and the joining date of user 'Tony' to the group 'Computers'.
Please help me with any solution.