Request easier device switching
I would like more Chromebook support. There is no Options+ for Chromebook so I can't use Flow, I have to manually press the buttons to change which device my keyboard and mouse connect to. It would be nice if, in the absence of being able to use Flow, that my keyboard and mouse would jump to the same device whenever the buttons are pressed on either one. My MX Mechanical keyboard has the three buttons easily accessible but my MX Master 3s mouse has the button on the bottom, which is more difficult to press. It is unlikely I would ever need my keyboard to be linked to one device while I need to use my mouse on another so switching the mouse when I press the keyboard selection should be an option. But overall I just wish you pushed more features and functionality to Chrome OS.

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Jeff Lumkin commented
It's the middle of July 2025 (over 2yrs since this request was posted). and this remains still relevant as ever. Especially for those who use Chromebooks for business purposes. Button Mapping has been added since, but still no support for MX Master 3s horizontal scrolling for the button on top (under the scroll wheel).