Freeze button prevent users from logging into your organization.
Note: Freezing user accounts doesn’t frees the user licenses available for use in your organization.
User permission needed: Manage Users.
Freeze:

Unfreeze:

Freeze button prevent users from logging into your organization.
Note: Freezing user accounts doesn’t frees the user licenses available for use in your organization.
User permission needed: Manage Users.
Freeze:
Unfreeze: