Use family/sub-account sharing instead of adding the same charger as a second owner.
On the main account, open Account Info → My Account → Invite, enter the other user’s email address, and tap "Done". Once the invitation is accepted, the invited account will have access to the same charger. Each sub‑account can start charging with its own RFID card(the main account should bound the RFID card to the sub-account) or the app, and charging sessions are logged under the account that initiated them.
Notice:The main account retains owner permissions; sub-account functions are more limited, including no schedule creation and no full charging-history view. (The main account can see all sessions, while each sub‑account only sees its own sessions)