ok guys i think there is a little talking at cross purposes here.
the op originally wanted to know how to step enter slices on different trigs without p-locking every individual one. the method i mentioned using 2 slices was simply a quick way to step enter slices without p-locking each individual step. copy and paste of existing trigs is also a quicker way of step entering. but the quickest way to do this is not to step enter at all but to play them in using slice mode. unless you just want to use the randomiser to keep throwing new selections of slices across your trigs.
scenes cannot lock slices to a slice of your choosing on a per step basis as you have discovered. what they can do is specify a range of slices that can then be selected by the position of the crossfader
so let’s say you have a pattern made up of trigs triggering slice one of a 64 slice chain and you then lock to slice 64 using a scene. now as you move your crossfader around (it’s divided into 64 increments) the slice between 1 and 64 will be played depending on the position of the crossfader when the trig hits.
if you have a pattern made up of various slices being triggered on different steps, as i understand it…and someone correct me if i’m wrong, the same relative interpolation happens.
so if you have for example slice 3 on a trig and you have the crossfader to the far right (at “position” 64) slice 2 will be trigged in place of slice 3. Slice 15 on a trig and you have crossfader at position 32, slice 47 will be played instead. Slice 13 and position 54…slice 3 will be trigged etc.