Hello, in the custom cabinet module, the specific operation steps for opening holes in the panel are shown in the screenshots below:

1. Press the B key to enter the panel mode, click the icon in the lower left corner to open holes in the panel; or right-click the panel and select Edit Panel Point;

2. After entering the Edit Panel Point, if you want to draw a special-shaped hole shape, you need to click Free Drawing. You can refer to the following steps for operation;

3. Hole opening is completed.

The operation gif is as follows: