Freezing:
In some cases, you can’t immediately Deactivate an account (such as when a user is selected in a custom hierarchy field). To prevent users from logging into your organization while you perform the steps to deactivate them, you can freeze user accounts.
For Example: Let’s take a user, Ravi Tej, just left your company and you want to deactivate his account. However, he is selected in a custom hierarchy field, so you will need to perform some more steps to remove his from the field. Since you can't immediately deactivate his account, you can freeze it in the meantime.
Follow The Below Simple Steps To freeze a user account:
Step:1
Select the Setup--> Manage Users--> Users.
Step:2
Then Select A User To Freeze.
Step:3
Selecting the user it will display the user details.Then click on Freeze Button.It will be there Next to Reset Password button.You can See the below Screen.
That's it.
Note: Freezing user accounts doesn't make their user licenses available for use another user. You must deactivate user accounts to make their user licenses available.
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