ToposPro is a software package for the topological analysis of crystal structures. This software can be used to partition any crystal structure into units of growth (e.g. natural tiles or Voronoi-Dirichlet polyhedra - VDP). An interface between CrystalGrower and ToposPro has been developed to produce the input files required for CrystalGrower to grow the crystal structure from its units of growth. Due to the advanced nature of the ToposPro software, guides are provided here to familiarise CrystalGrower users with the operation of this software.