If you mean load balamcing then you would have to make a chart. See below.
A B C N
Load 1
Load 2
Load 3
etc.
Total
You then add up the full load amps for each phase. The idea is to get the phase amps as close to being equal as possible. For eample:
If a phase has too many amps(alot more than the other phases) then you must move the load from that phase to another phase until the total amps for each phase is closely equal to each other. This could be done by moving the circuit breakers around in a paneboard/switchboard.
Remember: certain loads do not have a neutral connection and therefore the neutral amps for that load is zero.