1. You can choose to move the axis, X, Y, Z of three axes can be freely switched;
2. Click on “choose surface fixed-bottom”, and then enter a functional page of separate “choose surface fixed-bottom”;
3. Enter the value you want to rotate in the value input area;
4. Click the common rotation value for direct rotation; the system provides six values of -90, -45, -30, 30, 45, 90.