For the table row addition, see:
https://www.msofficeforums.com/word-...html#post38312
Regarding the Yes/No checkboxes, I'd suggest replacing them with a single dropdown with Yes/No options. Amongst other things, that avoids the complications of trying to make the checkboxes mutually exclusive and the conditional output can be managed by simply checking the dropdown's 'calculate on exit' property and using an IF field to test its state. For a demonstration of that, see:
https://www.msofficeforums.com/word/...html#post52434