Is it possible to password protect groups such that only those with the password can access that group?
I don’t think that is possible but, There are group privacy settings so only those who are added by one of the group owners can access.
That is even better. Thank you for the input.
You’ll also find that shared-knowledge passwords as a concept are generally insecure. All it takes is for someone to develop a grudge and share it with people that you probably didn’t want knowing the password.
A lot of software that previously supported password-protected entities or channels now rely on a user being explicitly granted access by a priviledged member.
Stick to using invitations to protect your secrets. Passwords are increasing becoming obsolete in today’s world.