During a rush I try to make things as streamlined as I possibly can.
If I have 5 or more drinks I will set up my cups and pitchers along the counter. I will pour my milk into the pitchers(unsteamed) and will add any "additionals" that the drink calls for like chocolate or a flavoring. If I have a decaf. drink I will switch on the grinder and have it running as I dose and tamp the other espressos. (The decaf grinder is much more slow than the others at our store) I will have each of the group-heads pulling simultaneously to make sure the drinks are made as efficiently as possible.
We also have a 32oz. pitcher available at our location that I use on the occasion of an extremely busy rush. Knocking out two milks at a time is always a good bet when you are pressed for time. However, I do prefer quality so I try to keep my usage of that pitcher to a minimum.
I started the shots, poured my cold milk into the pitcher and opened the valve when he "ever so kindly" opened his mouth. I'm willing to bet the shots would have set for sub-10 seconds. He then proceeded to tell me everything that I obviously had no clue about, which was anything and everything coffee related that every Ftarsucks barista had ever told him.
The shots were going into a 16oz white chocolate, caramel mocha, with skim. To which he later added splenda.