Unfortunatly i'm at uni so I cant fix the server...but follows is what it was...
Add a new field type - Calculation.
equate the calculation to
project_number & " " & plant
now in a layout that has this new field make the field into a drop down menu and define a value list...select project number for the first field and plant for the send sort by second field and that is basically the file I had.
Now to find the data all you have to do is enter find mode select the field and project_number/project from the list..
I'll look into that file when I get home...
Another way you could do what you want is to do a find for the project number, pause script, omit the record your after (a button will be required), show omitted records and then find again the project number....there is probably a cleaner/faster way to do that but I'm sure you would need to separate the data into a projects table and a plants table.
Ineva.