 So you just need to bridge your face. Not a problem. Face bridge, with target set to 2 poly, lets you left click 2 faces together. Left click once, left click twice, and bam, you're connected. If target is set to connected poly, depending on what direction the arrow is pointing to on the face you're hovering over, when you left click drag, you will bridge those 2 faces together. Move the mouse left and right to expand the shape, and move up and down to increase the number of segments. The shape of the expansion is determined here, and in order they look like. Bezier curve, arcs, small round corners, spline, arcs and line, tight round corners, circle, round corners, and straight lines. Interactive curvature means you can left click drag horizontally to expand the shape. Specified curvature will automatically set the height of the expansion to whatever amount you set here. Interactive resolution means you can left click drag vertically to increase the edge loops in the expansion. If you set specified resolution to something like 8, it will automatically insert 8 edge loops into your shape. Align with tangent means it will shape the curve based on the direction of the faces you click. Aligned to normal means you'll always get the same default shape no matter what direction the face is oriented. Variable width means when 2 faces are different sizes, each segment will be allowed to have different sizes. Constant width means it will try its best to make sure that each segment is equal despite the two faces being different sizes. If you want the width of the rows created to be symmetrical, set that here. Otherwise, set it there. Polygroup rows will create new polygroup colors for the expansion. Flat will keep everything that happens in the same polygroup color. Tries and quads means ZBrush will decide when to use tries and when to use quads for the sides. If you set this to tries only the sides will always be triangles, and if you set it to quads only the sides will always be quads. Hope that helps and as always I hope you have a fantastic day and I'll see you around.