 So you don't understand Move Brush Radius. Not a problem. Move Brush Radius just moves edge loops based on the brush size. As usual, left click to move an edge loop, hold Shift to slide it perfectly along the surface, and hold Alt to expand it inwards and outwards. Edge Loop Complete targets the entire edge loop around the object. Edge Loop Partial does the same thing with the exception of trying to avoid any point that is only connected to three edges. And Poly Loop will affect a Poly Group Loop perpendicular to the edge you click. And again, all of these can be combined with the Shift and Alt controls. Hope that helps and as always I hope you have a fantastic day and I'll see you around.