Go to admin.microsoft.com click ‘Users’ and select ‘Active Users.’
You will find the respective users. Click the three dots icon and select ‘Manage Product Licenses.’
Next, select the ‘Dynamics 365 Sales Enterprise Edition’ license.
Go to Microsoft Dynamics ATS and press ‘ATS Settings.’ Scroll down to ‘Manage users’ and press the plus icon (+).
Select the user and click ‘Add’ to have them appear in the list of ATS users.
Finally, you need to configure security roles.
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