Create a custom tag, say HideFromReport and set this tag to Y for those individuals you would like to be omitted from a report.
Then before generating a report go to Table Layout - Individuals and sort the table on this custom tag column. Then once sorted, select all indivuals having this tag set to Y and press delete key to remove them. Then generate your report and immediately after click the undo button to reverse the deletion.
Check individuals are now present before saving! 