@Adam Mepham Thanks for your feedback again. I have forwarded this scenario to product team since this is not supported now.
For now, checkbox or selection mark is an alternative way.
Checkbox / Selection Mark detection Form Recognizer supports detection and extraction of selection marks such as check boxes and radio buttons. Selection Marks are extracted in Layout and you can now also label and train in Train Custom Model - Train with Labels to extract key value pairs for selection marks.
https://azure.microsoft.com/en-in/updates/form-recognizer-v2-1/
I have one quick question about this scenario, is the "a" "b" "c" "d" expected to be selected or the whole selection should be selected (like: a.weather)?
Thanks.
Regards,
Yutong