Hi Indybug,
You can't do that with a standard Word table. The nearest you can get is to use a multi-column page layout with a single-column table. That way, as you add/delete table rows, the text snaking the multi-column page layout gives will support the kind of wrapping you're after.
For an example, see:
https://www.msofficeforums.com/word-...html#post37370
PS: I've been OS for 3½ months, hence the delay in replying.