Looking for assembly tips for Ikea Metod base cabinets

Hello,

things are slowly progressing with the kitchen. Cutouts have been made, now it is being sanded and oiled.

I have one more question regarding the sink base cabinet. Instead of a drawer at the top (the top 20 cm under the countertop), a kind of panel is placed instead. Unfortunately, I have not found any information/details on how this cover panel is mounted. Maybe the manual got lost in my millions of cardboard boxes...

Thanks for your help

I have another question regarding the sink base cabinet. At the top (the uppermost 20 cm under the countertop), instead of a drawer, there is a kind of panel on it.

Do you have a domsjö sink? The panels are fixed with brackets.

Regards,
IKEA-Freund

Or on pages 30, 37, 43.