How to make sure you get names and know who the manager is at an establishment if they don't wear nametags, they don't introduce themselves and if wouldn't feel natural to ask for one?

I'm pretty new to MS and definitely need to spend more time reading up here, especially to avoid mistakes that make me feel really bad like the one I made on my 2nd restaurant evaluation since starting MS last month.
I felt unsure about not having been able to identify a manager during the visit which was covered in the evaluation form. I know now I should have clarify with scheduler but I didn't back then.
Anyway my initially near perfect shop ended up being rejected and I feel terrible as I totally am to blame for. Turned out I interacted briefly with two (!) managers during my visit but I thought one was a host (welcomed us at a host stand upon arrival) and one a busser (cleaned up our table).

And hello everyone, I'm new here!