Hi Way-Z,
Welcome to the forum.
This is easily accomplished on the EDT Page (see Setting playback timings/durations), which shows you how to set the duration of individual chords in a pattern.
Another way of doing this is if you bind midi then you can use a midi clip to set the duration of individual chords. You can also change the order in which chords are played in a pattern and have an individual chord play for different durations within the pattern, 4 beats, then 2 beats then 3 beats (see Using Midi Clips to Control Scaler).