^What Meef said, you need to estimate the amount of lines up in the pattern editor (maybe additionally set delay column values for finetuning as well) you’ll need to place the note event. What helps is setting one of the rulers in the sample editor to beats, so you can sort of calculate the amount of lines it takes before the transient hits the spot you want to sync to. Manual work in any case, but once figured out easy enough to copy throughout imo.
There have been threads on this in the past;
https://forum.renoise.com/t/note-align-sample-hit-point/32368
https://forum.renoise.com/t/sample-snap-to-beat-point/23663
https://forum.renoise.com/t/pre-played-samples/16296
I searched for cymbal as reverse cymbal is what most people would miss such option for :D, but I bet there’ll be a lot more threads on it.