You want to join a profession in commerce: salesperson / team manager. As a seller(s), you must know the different sales techniques / researching needs / managing a delivery / restocking / DI-DA / customer reception / CRM ... / merchandising. As a future manager you must know and know how to apply sales concepts but in addition you must know how to build a dashboard / lead meetings / unite your team / conflict management / know how to communicate / create monitoring tables..