I have a project that all constraints are explained. It is very short IBM OPL code. No other program is accepted If you know IBM OPL it is very easy thing and there can be more than 1 project.
2 freelancers are bidding on average $43 for this job
I work with IBM ILOG CPLEX, but instead of using OPL I use Concert (that provides me an interface to program in C++). Anyway, it's not dificult to work with OPL, so I'm able to do this project for you.