Bind group expiry (and other trigger conditions) with group transition for an easier membership mangement

• Feature request

Right now, group expiry just removes the user from the group.
In use cases of membership management in associations, or business, in which members pay a fee per year, this feature is needed for an easier setup without so much intervention of the admin in so many steps.

Scenario: NGO with 3 levels of users:

• A) "regular members", needing tyo pay fee FA
• "associated members" , needing tyo pay fee FB
• C) "students", needing tyo pay fee FC

2 levels of time-dependent fees for each group:

• first year you pay feee F*1
• from second year onwards you pay a different fee F*2

When the membership payment for a year is over, that user should be automatically re-assignable to another group defined in the group transitions, which should allow to set conditions for the trigger to happen:

• when group expiry happens
• when freeperiods frmo PluginMemberPayment expire
• when some tracker field = some value, higher/lower than some date or other tracker field, etc. (this one is just brainstorming; it should be thought more )

This way, they can be requested to pay for the fee F*2, knowing that they have to pay FA2, FB2 or FC2. With current codebase, after gruop expiry, you do not know which group that user belonged to, and you can't offer that user the right fee to be payed for with plugin MemberPayment.

HTH

This bug has been demonstrated on show2.tiki.org

Please demonstrate your bug on show2.tiki.org