Assigng actions to the bottom button of an IKEA BILRESA

I have the top button as a toggle for my basement lights. I want to set the bottom as a toggle for my kitchen lights.

The kitchen devices are Zigbee devices.

One is a wall switch and the other is a smart plug

The smart plug is a 3RSP02028BZ
The wall switch is a TS0011

If the kitchen lights are on I want them to turn off and if off I want to turn them on.

What is your question?