To answer your question of what a TL does that a TM does not: placing supply orders, coaching & corrective action/seek to understand conversations, reviews, viewing MyGuest survey comments and taking appropriate action, participation in possible weekly meetings including safety meetings, conducting interviews for possible hires, providing input on scheduling, keying in approved swap shift requests/shift changes if HR does not do so, some TLs will also carry keys to the building. I’m sure I missed some