How to share all the resources as a licensed user with other non-licensed users?

As a user with premium license, you can have access to all the resources but users with basic model or no premium license can only have access to up to three resources.

Can guest member in teams be a user of the Calendar Pro subscription?

The guest member who is being invited to the Calendar Pro teams can be a user with basic features but can't avail the benefits of the premium subscription.