Hello, in custom cabinets, handle replacement can be done individually, in multiples, or all at once depending on your needs. Using a cabinet as an example, the steps are as follows:

1. Replace all handles at once: Right-click on the wall – All handles– Click Replace and choose the corresponding handle style.
   
2. Replace multiple handles: Press Ctrl and click on the door panels where you want to replace the handles, right-click – Handle – Click Replace and choose the corresponding handle style.
   
3. Replace individual handles: Select a door panel, right-click – Handle– Click Replace and choose the corresponding handle style.