How to allow users to unsubscribe from organic groups? In D6, more often than not users change their mind and want to unsubscribe from groups that the have subscribed. How can they do so?
Use this link:
http://sitename.com/og/unsubscribe/gid/uid

gid = group id
uid = user id

====== second option =======

Go to "Manage membership" or "My membership". click on "Leave this group"