I'm running Solidworks 2020 and when I'm trying to exploded parts in an assemble, I used to be able to right click and select 'align to' and then click on a surface or a part to change the axis that the part exploded on. That option is missing and just moving the center ball to a surface is very inconsistent. I'm also missing the rotation arrows that used to be around the center ball too. Does anyone know how to get those options back?
Simply drag the white ball on the edge or the surface you need.
Also make sure you do not use "Radial Step". Use Regular Step for the triad to be movable.