The Daily Report includes guest ledger and city ledger figures. The categories for those figures are created in Management.
Path: Management > Setup > Accounting > Report Headings > Daily Detail Report Categories (bottom right).
1. Click on the ledger corresponding to the one you need to create a new category for.
2. In the last empty line, enter a code and a name for this new category. Just follow the existing accounts protocols.
3. Click outside to save the new category.