Back panels can be added to the cabinet or custom-generated back panels as per requirements. The operations are as follows:

Method 1: Right-click on the cabinet, add functional parts - panel type - standard functional parts, select the back panel and drag it over (it needs to be dragged and adsorbed to the side panel/neutral panel to be placed)

Method 2: Custom-generate the back panel:

1. Press the B key to enter the panel mode; 

2. Press and hold the Ctrl key, and at the same time, left-click the four panels (upper and lower layers, left and right side panels) with the mouse;

3. Right-click the panels that have been clicked, and select Door Panel - Back Panel Generation.