[otnt]

I tried both methods and neither works. One tablet does not see the other--it is not discoverable, neither in the Chrome OS nor in Mobile Sheets.

I have a call into Lenovo to see if they can tell me how to link my Chromebooks in the Chrome OS.

It looked like it was going to work.  I turned off Bluetooth in the OS, then tried MS again.  The 2nd tablet was discovered this time, but it would not connect. Asked for phone bluetooth access for 120 seconds.  2nd tablet said 'waiting for client connection', then finally 'connection failed'.

2nd tablet won't let me turn on location services, which it says are required.  I turn them on, back out of location settings, and location services are turned off.

I've Chrome OS tablets (Pixel Slate).
There's no way in Chrome OS Bluetooth settings on my tablet to make tablet discoverable/visible.

So I have to use Mobilesheets to make it discoverable on leader device.
Via Connect devices/tablets, then I tap on "connect with last used settings" which brings "MSPro wants to make your phone visible to other Bluetooth devices for 120 seconds".
So this must be allowed and then master/leader tablet is visible.

On the follower/slave tablet you'd see leader/master under "Device groups" in connect devices/tablets dialog/window.
Then I have to tap on this particular leader and it would change colour, then tap "join group". Then I have to do this same step again (don't ask me why) so tap on the leader, then tap "join group". And finally it would say "connected"!