Hello, in custom cabinets, handle installation can be done individually, in multiples, or all at once according to your needs. Using a cabinet as an example, the specific steps for operation are as follows:

1. Install all handles with one click: Right-click on the wall – All handles– Click Install and select the corresponding handle style.
   
2. Install multiple handles: Press Ctrl and click on the door panels where you want to install handles, right-click – Handle – Click Install and select the corresponding handle style.
   
3. Install a single handle: Select an individual door panel, right-click – Handle– Click Install and select the corresponding handle style.