Print Tiles Greyed Out

Hi,

I have a large underwriting report that has several users working on the same workbook. I'd like to repeat a few rows in the workbook for formatting purposes that contain the same titles on each page. When I go to 'Print Titles' under the 'Page Layout' tab, the 'Print Area' and 'Print Titles' are greyed out (locked). I tried finding different solutions like ungrouping the workbook, copying the entire workbook and creating a new one, and inspecting the excel file.  Nothing seems to work....

Please help!