How to program Triplets

Can anyone please share a method to program triplets, either 8th (T) or 16th(T). Can I make the steps less than 16, such as 12?

Zooming in /out lets you make triplets via the pads, if you have a 3x zoom factor.
And when changing the length of a pattern, keep the encoder pressed down while turning. that lets you change the length in steps of 1 16th.