You can insert various types of field into a report. These are accessible through the Insert menu:
Database Field (see Inserting a database field)
Formula Field (see Inserting formula fields into a form or report)
Lookup Summary Field (see Inserting a lookup summary field into a form or report)
Group Summary Field (see Group summary fields )
If you want an inserted field to appear just once in every report, you need to insert it into the Report Header or Footer.
If you want it to appear on every page, insert it into the Page Header or Footer.
Insert it into the Detail section if you want it to appear with every record.