We have an Instructional video to guide you through the installation at https://www.amazon.com/dp/B08CVJLDFD

Besides, here are some tips below for your reference.

(1) Determine the correct position where you plan to mount the tray under the desk

(2) Clean the surface of the table with a dry cloth

(3) Drill holes with an electric drill

(4) Secure the tray with the included screws (5) Gently press to fix the tray more firmly

(5) Leave the tray in place for 12 hours