Begin by selecting the cabinet that you want to change the shutter design for.

Look for the menu labeled "Shutter" or "Drawer" on the right of the design panel. It would be arranged in a vertical order for example, as Cabinet>Partition>Shutter System>Shutter> Panel etc. Click on it to access the settings related to shutter.

Within the "Shutter" menu, go into the "Customise" tab. Where you will find two option, "Add front mirror" and "Add back mirror"

As per the design requirement, select any of them to add a mirror to the shutter.

After adding the mirror, if you want to change the location of the mirror, click on the mirror to select it and go into the "Mirror" menu.

Here you have the "Translate Panel" option under Quick Access or Construction tab.

You can input the required numerical value in mm into the box next to Z, to move it up/down or X to move it left/ right accordingly.

You can also change the size of the mirror by "Extension Parameters" under Construction tab. Open the drop-down to change the Depth and Width extensions.

The numerical value added here is the reduction considered from the size of the shutter. So, for example if the top extension is -100 and bottom is -200 for a shutter of size 2000, it means that the mirror will be of 1700mm height and installed at a distance of 100mm from the top, and 200mm from the bottom, by default (if no translation is done).