First of all, looking at my post, I mistyped the first sentence. You need to build a query, not a criteria.
Now, if you want to break the records down or 'group' them by a field such as technician, you need to set the groupings on your report. When you are in the design view of the report, go to the 'View' menu and select sorting and grouping. Add the field that contains technician (or technician ID or whatever) to the list and select a sorting preference. Then at the bottom of the window, set group header and group footer to 'yes'. Now go back to your report. If you put the technician box in the 'technicianheader' area, then you will have a report that displays each technician and the jobs he or she has associated with it. Now in the 'technicianfooter', you can create a text box that has a control source like:
=sum([jobhours])
This will total the hours for each group (technician).
Now if you set the report's recordsource to a query that I discribed in the last post, you should have something close to what you want. Keep in mind that I generalized the field names and you will need to substitute your own field names to make it work.
Good Luck
Mike Rohde
rohdem@marshallengines.com