The Photon Workshop Software can be found on the USB Stick supplied with the 3D printer. Install and open the software to run the program.
Using the menu select the correct 3D printer: Configure -> Machine Type -> Photon Mono SE.
The file you exported using the r3Dent web app can be placed into the program by dragging and dropping it onto the canvas.
On the left menu, select the rotate function and use the function "Use The Facet As Ground". With this function you can select the side of the 3D model that should face the ground. Select the bottom of the 3D model to rotate.
By selecting the move function on the left menu, move up the 3D model in Z Axis by 10 mm. This ensure there is space between the 3D model and the ground for support structures.