Plug in your glue gun and let it heat up.

I made a big dot on the oscillation button, another one on the Standby ON/OFF button, and two more dots (big and small) on the Airflow control buttons. I don't use the Sleep Timer so I haven't added any dots to those two buttons.

If you don't get it right on the first try, don't worry. Just wait a couple of seconds for the glue to cool down and remove the dot. The glue comes off without leaving any residue or marks on the plastic.