you cant!
The rows on exel are endless
header
It probably depends on what version of Excel you are using, but on my Mac, I would go to the Layout tab and select Header & Footer under Page Setup. Then I could add things on the resultant window.
Page Layout View
Text
Go to Headers and Footers and pick Custom header. You can then make the adjustments you need and type in the name and course number you want.
If Your asking like on microsoft word then you go to insert and then click on the word header and then u click what kind of header you want
Exel was created in 1985.
Exel's population is 40,000.
Page Layout Print Layout Header/Footers Fill in what you want in the Footers box and center/format as desired.
Rename the tabs for each worksheet to identify the data they contain, Insert a new worksheet after the first worksheet, change the color of the tabs related to each project
osi add header at each layer but SNA add header at bottom layers