Paint Layers

I’m wondering about the “Paint Layer Manager” or newer “Senseiformat - zero Brush”.
Mainly the “save paint layers”.
Can all layers be saved in a folder or do they have to be saved 1 by 1?
Also while here.
Bump maps…if I export a bump map, do I convert Blenders color schemed bump to heightmap then to Normal?
I’m not sure how accurate but if I wanted to paint color and bump at the same time.
So basically:
1)enable “color” and “normal” in the texture properties while painting bump.
2)Create a copy of Blenders bump for a color texture.
3)Use the Blender bump copy and convert for a regular normal map.