Hello, to delete or keep only the single-sided toe kick/skirting line, you can follow the methods below to operate.

Method 1: You can left click one side of the toe kick/skirting line, left click the shown trash button to delete one side of it.

Method 2: You can use the tile custom and right-click to delete the single side. First enter the custom tiling. In the 3D/roaming mode, drag the skirting line from the line library to the wall with the mouse and right-click the skirting line to delete the single side.

Left click the toe kick/skirting line under tile custom mode,change its parameters at the right panel;

The method to delete a section of the toe kick/skirting line:

Double left click the wall to enter the 2D tile custome canvas, left click the toe kick, go to the right panel, hit the edit,change the size of the blue area that you would like to delete by input the value of the distance from it to both sides;right click the blue area, delete section to delete it;Save your project and reload it to show;