A method for determining a solution group of parts among a plurality of parts in an assembly, the solution group being situated substantially proximate to at least one target part of the plurality of parts, each respective part of the plurality of parts being identified by a respective part volume and a respective locus, each respective part volume substantially containing a respective part and each respective locus being identified with respect to an origin, includes the steps of: (a) Identifying a target volume substantially containing the at least one target part. (b) Identifying each respective part volume for each relevant part. Each relevant part is identified by a respective part volume having a predetermined relationship with respect to the target volume. (c) Assigning each relevant part to the solution group.