The ornamental design for a packageassemblyunit and package, as shown and described herein.
FIG. 1 is a top plan view of a package assembly unit in an open, unassembled position.
FIG. 2 is a top perspective view of a package formed through use of the package assembly unit of FIG. 1, illustrating the top and a plurality of sides of the package in an assembled position; and,
FIG. 3 is a bottom perspective view of a package formed through use of the package assembly unit of FIG. 1, illustrating the bottom and a plurality of sides of the package in an assembled position.
The broken lines shown in the drawing disclosure form no part of the claimed design.