MIDI learn
Click a parameter, turn a knob, and the software ties the two together without anyone needing to know which CC number the knob sends.
Nearly every DAW, plugin and soft synth has it. The software enters a listening state, waits for the first incoming MIDI CC and stores the mapping between channel, controller number and parameter. It replaced the lookup tables at the back of the manual, and the era of configuring controller numbers knob by knob on the hardware itself.
The simple interface hides a few traps. Seven bits give 128 steps, which you can hear as staircasing on a filter sweep; NRPN and 14-bit CC fix that but support is patchy. Endless encoders send relative values in several mutually incompatible dialects, and the wrong interpretation makes a parameter leap between zero and maximum. For a whole mixer, Mackie Control is usually the better tool.