A user can be assigned to multiple locations with different roles.
To modify the role of an existing user, navigate to User Screen in your account settingsb. Here you can see all users assigned to your properties.
Click on the corresponding user to open a settings window, where you can manage the user's rights and roles
By clicking on +Add another role you can assign multiple roles for different properties in your account.
To change the rights for a property (e.g., from Replier to Property Admin), simply use the role drop down.
You can also add/remove Account Admin rights by using the blue toggle.
Learn more about user roles here.