Pre-Bussing Tables
A couple ways covered here: with and without a tray.
Both work - trays are actually highly efficient and if anyone told me they'd like something to go, I'd sometimes even bring a box out with my tray - put their food into a box for them, then pre-bus all the plates in one shot.
Most of the pre-bussing I've done in my life - and I've done quite a bit of it - has been without a tray using the technique shown in this video. I demonstrate two ways to handle silver: piling on one plate (often setting knife in between prongs of fork) and putting all silver into one hand. After many years, I now default to gripping all silver into one hand as it's more secure.