 So you need to extrude, not a problem. Face extrude lets you left click a face to drag out new topology. If you hold control, you'll detach faces from the surface. If you hold shift, you'll remove in between geometry, and if you tap alt, you'll change the color of the new poly groups. One sided poly is a normal extrusion, no sided poly, detaches the surrounding polygons. And step brush means it will create new edge loops as you drag out. And if you want a specific size of edge loop extrusion, you can set that right here. Point 1 is standard, but if you want more space in between, you can scale it to something bigger. Hope that helps, and as always, hope you have a fantastic day, and I'll see you around.