Hi RobBing and welcome,
Beautiful image - thank you for attaching.
I think it's just as simple as doing filtering. Have you tried filtering by right-clicking the repeating table and choosing properties->display->filter? The other option, is to filter each row using a conditional formatting rule: home->manage rules->add formatting->select hide, add condition. You may need a custom condition for these that involves the current() xpath command. But, first hunch would be you don't need that. Anyway, tons of samples around here for doing all of these things. Search for filtering, cascading dropdowns, current(), preceding-sibling, and you should find something of value.