I have replaced a ceiling fan in my home that had a separate hot wire for a light. The new fan has a remote control for the light & fan motor. The old fan was controlled from a 5-gang wall switch. Switch 2 was for the light, position 3 had a fan speed control. The other switches are still in use for other lights. I want to remove 2 & 3, to avoid confusion on how to operate the new fan. Does anyone know of either a safe insert to cover the openings in the switch plate when I remove the switches, or a source for a new wall plate? Yes, I have googled to no avail.
You need a "switch dummy". Also commonly called a "switch blank", "blank insert" and "blank filler".
The big box stores may not carry this item, if not, electrical supply house should have available.