Security Configuration

It is optional but recommended to create a separate backup user. In the next step we will connect our PBS to Proxmox VE, and for that you need a user. You could simply use the root user, but best practices dictate that a separate user is better for security reasons. Also, Add Two Factor Authentication to secure your root account.
Note: a user that has Two Factor Authentication, can't be used to connect your PBS to Proxmox VE. That is also why we created a separate backup user in the previous step.
 
Adding Backup User
 
Login to PBS
Under Configuration go to Access Control and click Add
In new user window
Give it a name
Realm: Proxmox Backup authenticator
Choose strong password
Make sure Enabled is checked and it doesn't expire
Now that the account has been created, we also need to give it the correct permissions.
Go the Permissions tab
Click Add and select User Permission
In User Premission Window
Path: select datastore only
User: choose backup user you created
Role: Choose DatastoreAdmin
Make sure Propagate is selected
Click Add
 
Enabling Two Factor Authentication
 
Go to Access Control
Select Two Factor Authentication and click Add
Select TOTP and Fill the required details using your preferred password manager
You have to do this for each user