You can add the Dynamics ATS subscription license to any of these Dynamics 365 User licenses.
- Power Apps Premium
- Dynamics 365 for Team Members
- Dynamics 365 for Sales
- Dynamics 365 for Customer Service
- Dynamics 365 for Project Service Automation
- Dynamics 365 for Field Service
- Dynamics 365 Enterprise Edition Plan 1 & 2
- Dynamics 365 Human Resources
- Dynamics 365 Finance
- Dynamics 365 Business Central