Easy Approach
Something I did was use conditional formatting on the section or the entire page (might want to do entire page since pivot tables can expand contrast. This is what I did:
1. Pivot in Tabular format - As a general rule, I think Pivot Tables are best laid out in tabular format - Pivot Tables are sourced from tables, an I've found most people I've presented information to like seeing the Pivot's summary information
in a similar way. To do this, go to the "Design" tab, at the far left, click on "Report Layout", then "Show in Tabular Format". For your purposes, you also want to select "Do not Repeat Item Labels" because the conditional formatting will basically look for
blank cells.
2. Create your own Pivot Table - From the Design Style selection, choose "New Pivot Table Style" and from the design menu, chose "Whole Table" and make it so the whole table has borders (I prefer only horizontal ones, myself). Change anything
else you prefer for the look like giving the Header and Grand Total rows a different color, but leave it so that the middle is no fill/white
3. Conditional format blank cells to have a white border - I selected all cells on the sheet, and made it so that any cells that were blank would have the TOP border white. What this does is make the row group look like a merged cell. Go
to "Conditional Formating" on the Home tab, select "New Rule" then "Format only Cells that Contain", then make "Cell Value" "Equal to" then type in ' ="" ' (that's equal, quote quote - or basically equals blank). Then click on "Format", select the "Border"
tab and then make it so the TOP border is White.
This gets you roughly what you're looking for. Though it won't band your rows, it will give the effect of grouping them.
More complicated approach
To band them, you could make a formula that basically alternates the words in the first column between 1 and 2, and conditional format on the 2 such that any row that has a 2 will be filled a color. Here you Would want the rows to repeat in the tabular format. So
in this case, if the first column has groups A, B, and C. If you sort it so that Group A all appear together, then they would get a 1, the next Group (B) would get a 2, and C would get a 1 again. This needs a pretty specific formula to make it work both to
get the 1 and 2s, And for conditional formatting, so if you'd like just message me and I can walk you through it, but the easier approach should suffice as a quicker solution.
Hope this helps,
Daniel