WebAdmin Roles - Add Users and groups

Hello everyone,
I am currently restricting access to our firewall.
Nevertheless our IT support needs to be able to add users/groups so that they can configure Remote Access for users.

I added a role for them to enable Remote Access Administrator.
That works but they can not add users/groups since they do not have the permission to do so.

I dont see a Role that would allow them to do so?!
Is that just missing or am I missing something?

Best regards