Now you know how to add a user. It is time to learn about passwd command. Following are common things.
Change user password for rocky
Force password change at next logon
Nullify password (aka delete password)
Use above only if you need password less account
Disable account / Lock account
To enable disabled / locked account, assign a new password
List user password aging
Force aging - minimum number of days before user are allowed to password
Force aging - maximum number of days a user need to wait between password change
Read man page for more options and info
Code:
man 4 passwd
man passwd