You are a bit lazy, don’t you.
RTFM!
GA SE manual page 22 and further
Mode
Determines the trigger mode for the samples of a pad:
• In Velocity mode, the incoming velocity determines which sample is
played.
• In Layer mode, all samples are played at the same time, regardless of
their velocity.
• In Round Robin mode, the samples are played repeatedly one after the
other, from left to right.
• In Random mode, samples are played randomly. Repetitions can occur.
• In Random Exclusive mode, samples are played randomly, but
repetitions are not allowed.
kind regards,
R.