Create a template in Excel, including all of the appropriate Solver settings, that would accommodate a standard shortest path problem with 8 nodes, where the objective is to find the shortest path through the network from node 1 to node 8. In Solver, specify all cells in the decision variable table in the By Changing Variable Cells box. Insert a large distance into all cells in the distance table. (The user can then insert the actual, i.e., smaller, distances into each cell that represents an actual route.)