 So you just need to insert something, not a problem. Insert action lets you left click to create a new edge loop on the edge you click. If you hold shift it will straighten the lines and if you hold alt it will delete the edge loop you click instead. When target is set to multi-edge loop and you click on an edge it will create a new loop and if you drag up and down you'll be able to increase the amount of loops. If you want a precise number of new loops like eight just set it right here and the next time you left click an edge you will see eight loops. The defaults to zero specific elevation which means you can't drag left or right to expand but if you want to be able to expand by dragging set it to interactive here. Smooth elevation adds curvature to every other loop parallel to the one you click. These options control the shape of the expansion and in order they are spline, radial, linear and flat. These options control the direction of the expansion. The default is per polygon normal which just expands the whole thing out but clicked normal expands everything in the direction of the face you clicked and average normal is just based off math combined in each normal in the polyloop you click. Alternate polygroup means every other loop is grouped. Same polygroup means that all the new groups are the same color and keep polygroup keeps the colors the same for all. Hope that helps and as always I'll be of a fantastic day and I'll see you around.