How to dial in espresso grinder settings during a rush

Dialing in espresso during a rush taught me that small grinder changes can create a big line problem. Early on, I would chase every shot that looked off. One barista would tighten the grind, another would change dose, and by the lunch rush nobody knew what the baseline was anymore. The drinks were not terrible, but they were not repeatable. What helped was keeping the adjustment process boring. A…