Ability for member to request group membership with automatic acceptance (not Auto-Subscribe)

With an Open Group without Auto-subscribe, the member must request access to a group then the request must be approved before joining.
With an Open Group with Auto-subscribe, the member does not have to request access to group, then the member is automatically joined to the group (if exceeds criteria).

Is there an ability for a member to request access to a group then the request automatically approved without any Moderator approval.

For example, if a member is willing to assist other traveling members with repairs, breakdowns or other problem in a region. The person offering assistance can then add (or remove) themselves to special "Regional Assistance Group" without any Moderator approval.

Same thing for a "Regional Travel Group", which would allow them to see a hidden "Regional Travel Group Forum" while they are planning or traveling in an region.

Auto-subscribe would make all members members of all groups automatically ... so it would be helpful if a member could request and get automatic approval so they could manage their groups based on their travel plans or willing to assist.