The OOB Sales Team subgrid on the Opportunity Card has been added using a Connections Subgrid View.
Does it also create an System Access Team in the background and if so what Team Template does it apply ?
I have checked and it did create a hidden Access Team with a GUID of the Opportuity+Business Unit but it had no Team Template specified therefore what permissions would the Sales Team member be given.
Additionally - how do you apply a Manually created Access Team that is not linked to a Team Template.