@Carol5 super admins generally get access to all of the features – just not the paid features exclusive to service and sales sets. The article I shared explains this:
CoreSeat: provides your user access to the features and tools in the subscription services you've purchased.
Sales Hub Seat: provides your user with access to Sales Hub, and access to use advanced features for Sales HubStarter, Professional, or Enterprise.
Service HubSeat: provides your user access to Service Hub and access to use advanced features for Service HubStarter, Professional, or Enterprise.
View-OnlySeat: allows your user to view your subscription services. Users with a view only-seat cannot make any changes to the account. There are certain tools inaccessible to View-Only Seats (e.g. social posts, forms).
Partner Seat: a free seat that gives eligible HubSpot Solutions Partner and provider employees access to all features in a client's account.