Allowed domain restriction to sub-groups

Problem to solve

Allow admins to restrict domain restriction at the sub-group level

Intended users

Admins (Owners & Maintainers)

Further details

Since release 12.2 it is possible to allow domain restriction at group level, by this way only users with a pre-defined email extension (e.g. @acme.com) to be members of a group. This kind of enforcement is great and improve the security, especially for the SaaS release. However, it is possible to apply this option only at the group level and it is not possible to have the same possibility at the the sub-groups level which is unfortunate.

Proposal

So, it will be great if you could extend this feature to the sub-groups