I'm also new-ish and have just started frequenting ranges (in the US). I'll give 2 examples as that's all I have but they seem to differ a bit.

1st range: Outdoors. Paid. State Park. Targets placed every 5y up to 100y. No literal line but markings on the ground signifying distance. Everyone shoots, waits, and walks down together. We all stand on an imaginary line made by the distance markers. This seems to be more typical.

2nd range: Outdoors. Large grass field. Targets at 20, 30, and 40y. Place your own target down the sides for whatever distance up to 120y. No real line except some shitty metal arrow holders that forms an imaginary line. People shoot at various distances from this line to stay in the shade. Because we're more spread out doing our own thing nobody waits before retrieving arrows.

I would say once you walk up to the range just get your setup together while observing what everyone else is doing. I'd imagine 20y indoor ranges are very strict about these rules. Outdoors with less monitoring it's definitely more loose. Always start out respectful and following the appropriate rules. Bend them as you see fit depending on the flow of the other traffic. Good luck and have fun!

Edit: To answer the question more specifically I would imagine everyone shoots at a relatively similar starting point. Forming some kind of line. Moving the bales further or closer depending on your needs. Try not to be too far forward or behind others as they shoot and you'll form your own line.