Permission Sets are the best way to ensure your admins and users have the correct field and object level permissions when upgrading to new SteelBrick releases. Any new objects or fields are included in the permissions and only require you to assign them to your users. This also allows you to retroactively grant other users permission to access their org.
Granting SteelBrick CPQ Permission Sets:
To assign permissions to your admin users, repeat the above steps using the SteelBrick CPQ Admin permission set and select your admin users.
Note: Want to automatically assign the sales user permission set to licensed CPQ users? See Script to Automatically Assign CPQ Permissions to Licensed Users.