@Chetan Krishna Sangoram ,
Regarding this, Azure Active Directory (Azure AD) services require you to license (in this case Azure AD Premium P1) to each of your users or groups (and associated members) for that service. Only users with active licenses will access and use the licensed Azure AD service. Licenses are applied per tenant and do not transfer to other tenants. So, for example, if your company has 200 employees and you want to give P1 access to 100 employees, you need to pay a 100Xmonthly rate (and no cost for apps).
For more information, visit the below sites
- https://learn.microsoft.com/en-us/azure/active-directory/fundamentals/license-users-groups
- https://azure.microsoft.com/en-in/pricing/calculator/?service=active-directory
- https://learn.microsoft.com/en-us/azure/active-directory/enterprise-users/licensing-groups-change-licenses
I hope I have answered your question.