Hi! If you haven’t seen it already, the thread linked below has a couple of incremental slider samples that should help. For step by step instructions on how one can be built, the post and sample file below should help:
If you’re looking for a pre-made slider that can be quickly reused, then the file from josephxbrick’s post below has some ready-made notched sliders along with instructions on how to customize them for the values you need: