What output do you want to see?
Can you upload an example?

I would like to see units that are due for a hourly PM and units that are due for Kilometer PM on a single report. When I set -1 as a criteria for both queries, nothing is displayed. However, if I set -1 criteria for only one query I get an output for the selected query.

I would like to see those two based on my report criteria.

One thing I see right off the bat is that you have an AND condition in you query for NextServTrig AND KiloPMReady.
Remember AND -- Across - Or -- Down
I the case that you show, neither of the records is true on both NST and IPR fields so they wont show up.

Hi David, to show both columns with "-1" in the records, you need to put the two criteria on different lines in the query designer.  See picture below.  Note the word "or" on the left.  To do what you want, the query needs to show records in which either the hours column is due *or* the kilo column is due.  In the English language, you may say you want to show the hours column "and" the kilo column.  But in database lingo, this is an "or" operation.  This is a fairly basic topic, but it is important to distinguish between "and" and "or" in situations like this.  Richard has early courses on queries that can help.

Thank both for your assistance with this. It worked perfectly! I had also thought about it before checking the forum and came up with this: Expr1: [HrsShedulerQuery]![NextServTrigger] Or [KiloShedulerQuery]![KiloPMReady]. I went with your suggestion though. Thank you @Alex, Scott, and Kevin.