Several ways. Probably the best for the user would be to construct an
unbound Form (frmCriteria) with a control (combo box, text box, or
whatever; let's call it cboCrit) which will let the user select some
unique field identifying which label is to be printed. Create a Query
using
=[Forms]![frmCriteria]![cboCrit]
as a criterion. Base your Report (the label report, perhaps using the
report wizard to build it) on this query. You can even put a button on
frmCriteria to launch the label report.