Grouping in a protected worksheet

[wnwilkerson]

I use Excel 2007. I have a worksheet that is all formulas that calculate based on values entered in other tabs in the same worksheet. It will be viewed/used by a number of people and i want to protect the forumlas.

I also have rows grouped in the worksheet. I can't figure out how to protect the worksheet (without using code) and not lock down the ability to expand and contract the grouping.