There is an option to assign more than one account to a single user with only one email and password through the below steps:
1- Click on Settings as below:
3- You should be able to manage the users through this window:
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You can Edit through this panel:
Choose the name of the accounts you want to assign through (Assign user to multiple sub-accounts) as below
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Then, You can click on the (Switch Account) option when you log in with the user you edited to switch to a different account.
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Feel free to contact us on [email protected] for any further concerns.