I highlight the block of cells I want (they highlight in blue), then click Table, Properties (at this point, the cells are still highlighted in the background). Then I select the borders (I’m using the Outer Border with Inner lines preset) and click OK, and the entire table gets that border.
I also tried right-clicking the selected cells and going to Table Properties, and the same thing happens.
I unchecked “Merge adjacent line styles” but that makes no difference.
I tried Styles (which I didn’t think of before) and that works, but adding borders also increases the row height by about 50% higher than it was before (and I can’t find a row height settings to change it).
So I’m getting closer. Thanks for your help so far.