Displaying Sub Categories in Report

I have an excel spreadsheet with many columns (categories). For one of these categories I need to include a bunch of sub categories that need to be filled out as well but don't want to over-crowd the spreadsheet and would like to somehow consolidate the information.

For example i have columns : Facility, unit description, candidate profile, contact info, etc

Specifically for 'Unit Description' I have the following additional sub categories that need to be filled out 'unit name, unit location, director/manager, beds, AVG daily Census, etc...

How can I show these sub categories related to Unit description but in a clean, efficient way?

Please help!