Which ipad model? with cellular option? which macOS version? does your ipad charge if you plug it in to mac?
Sorry, i have to correct myself. AdHoc was a wrong term. I rather meant "Internet Sharing" by crating an AccessPoint.
Background:
AdHoc = Accesspoint without any security (password, etc).
Apple has removed this due security reasons longer time ago. Although you can still crate an AdHoc by terminal commands, i would not recommend it, as it makes sense that apple kicked it away from GUIs. Thats why you do not find the Option anymore in the WIfi icon.
Anyhow, i would recommend the USB connection for your scenario (performing live?, etc...).
A reason, why you cannot see your iPad in the Internet Sharing settings could rely that the ipad is in "IDAM" Mode? (=connected via USB and activated as an Audio/Midi Interface in Apple Midi Setup)?? That would make sense.
Background: Apple restriction - Only either IDAM or Network via USB - never both at the same time.
Anyhow, if you need IDAM and you have the mobile data option, it is possible to use IDAM and Network for TM, as we have two different intefaces we can use to connect with the mac:
Create an AccessPoint on the iPad and connect from Macs Wifi to AP of the iPad (the other way, we tried before).
But all of this is just a guess for know, would help to know the details which Hardware/SW you use.
But, it is definetly possible. 100%. I use a similar setup from time to time, too.
cheers, meg33
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