Moving secondary users to primary usergroups via promotion

[Kyojii]

Is there a way to move secondary users from lets say a public joinable usergroup to a primary usergroup via the promotion system or any other way?



I wan't members of a public usergroup (secondary) to be moved to a primary usergroup after a certain criteria is meet such as after 30 days.



I need to do this because I want there to be a guest usergroup, member usergroup, and a recruit usergroup. I want guests to become recruits if they apply to a usergroup and want recruits to become members after 30 days.



I have it setup like this:

Guest --> apply to joinable usergroup --> after 1 post people in the secondary usergroup (the joinable usergroup) become recruits --> then after 30 days people that are in the primary usergroup recruits become members.



it is a bit convoluted but I need a way to distinguish beyond the post count/ days registered/ or reputation. So I want to use a specific usergroup to do primary promotions from. Thus only people in that usergroup get the promotion and not everyone with 1 post.



I tried to set it up that way but, the transfer from secondary group to primary usergroup via promotion system is not working.