Which station is this? Matters because some (most, if not all, hubs and some focus cities) have separate 1K/Polaris and then a check in area for other premiers and F (domestic), plus *G.

At airports that don’t have the separate areas, all UA premiers and *G are supposed to have access to the 1K/Polaris line (the signs used to at least have a *G logo on it, and then there is the thread about the ‘Premier 1K’ signs and whether there is supposed to be a comma between them). My experience is heavily at YYZ, where at least pre-pandemic, they had only the Premier 1K (no comma - no comment on whether there is supposed to be one)/Polaris signs, but where all UA Premiers and *G can go.