You can add users who you have previously deleted, back to the account. Even after a user is permanently deleted, the deleted email address can be used to create a new user. This added user will be considered as a new user to the CRM and will not be linked with any of the old existing records. However, if you think you may want to re-invite the user later, instead of deleting the user, you can deactivate them. Learn more here on how to deactivate user.
To add a new user:
1. Log in to Zoho CRM with Administrator's privilege.
2. Navigate to Setup > Users and Control > Users.
3. Click the +Add User button
4. In the Add User pop-up, fill the required details.
5. Click Save.
Note that deleting or deactivating a user does not cancel the user's license. If you no longer want the user license, you will need to unsubscribe it.
1. Click Upgrade.
2. Click Manage for your Edition.
3. Click Downgrade under Action.