What exactly are overrides?
I'm going to give you a very long history - don't mean to lecture - just want to give background.
TL;DR: override returns to cash, GiftCard, even crediting a credit card instead of just Merchandise Return card - only TLs and above have it.
------------------long-----------------
In the context of Classic POS, there was a key called "K4" for GSTL ("Supervisor"). Having that role allowed you a lot (and I mean A LOT) of power on the registers. You had no limit as to what you could do as far as the amount to requisition on gift cards, put a return with an ID back however you wanted (even cash), and the dangerous part was that you could give it to anyone else (and despite that being the HQ instruction when GSA went away... I'll get to that in a moment), most stores were like "lmao heeeeeeccckkkk no" and gave it to only former GSAs or downright nobody but Leaders. But to begin the process of closing the checklanes you had to have K4 GSTL so a lot of stores gave it to night cashiers.
(GSA was a "head cashier" essentially - they got paid a few pennies more an hour to do everything the GSTLs did, short of issuing performance conversations - so running the lanes, sending people on break, Karen Wants a Manager de-escalations, etc. With 2019 Modernization, the role was eliminated, but since Target knows that 3/4 of the time there's no SETL [new GSTL title], and it was all about "empowered to make it right," they told stores to make everyone a K4 GSTL in the POS. Well, you can imagine how that went at some stores... all kinds of tomfoolery and giveaways. At stores that decided not to do this, only some trusted cashiers got it, but some betrayed that trust and gave it to all their buddies - causing friction among TMs because they're not "the chosen wielders of the holy K4 key.")
In New (Current) POS, they needed some way to continue Target's trademark "make it right for the Guest" method of dealing with Karens, scammers, and scamming Karens. They smartly (no Owned Brands pun intended) decided this time, they'd give it to only Leaders. See, Classic POS wasn't synchronized very well with Active Directory or Workday or whatever I.T. software we use to issue you a job code and role, so that's why non-TLs could be keyed as Supervisors despite not being one (also, it was called Supervisor because Classic POS was old as dirt - it was from the days before we called them Team Leaders and still said customer!).
New POS is synced. That's why you login with basically the same interface as the myDevice or Workday. So it knows what job code you have. And gives you only the powers HQ decides you should have in your role.
The override resides in the Guest Service app under "Make it right return" and that's the only "override" New POS has. It lets you bypass anything with respect to return limits or even letting you put money back on a credit card or even cash or GiftCard for ID returns.
Otherwise, even as a Leader, all other aspects of Classic POS limit you in the same way as a basic Guest Advocate.
They started by only making this available to ETLs and above. That was very stupid - sometimes there are no ETLs in the building. A few weeks later, they gave it to TLs also.
There are no current plans to create any other roles to emulate the previous chaos that was having quasi-TL-wannabe Guest Advocates. Everyone should be the same across the board. Overrides for returns should be handled by real Team Leaders and consequently only they have the override returns option - the only override in existence on New POS at this time.