How do I connect the LEGO Powered Up remote control? - Bricks

I'm trying to use the Powered Up remote control to control my new train set, but it doesn't seem to work. Is there some process that I need to follow to connect or pair the remote with the Smarthub?

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LEGO Powered Up platform - new details (updated) - RacingBrick

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This powered function kit is only an upgrade accessory for LEGO 42126 Ford Raptor(PRO), and does not contain building blocks. It corresponds to a

Skyview Powered Up Kit PRO for Lego 42126 Ford Raptor(PRO), Power Upgrade Kit with Servo-Motor, Remote & App Control Functions(Bricks Set NOT