we are on Baan50.b, and moving to 50.c

Let me setup an example to demonstrate my issue. We have 3 machines, and 5 molds that go on the machines.

Mold 1 is for item A
Mold 2 and 3 are for item B
Mold 4 and 5 are for item C

Currenlty, our routers are setup as follows:
Item A has a machine operation with the # of machines = 1
Item B has a machine operation with the # of machines = 2
Item C has a machine operation with the # of machines = 2

When MRP runs, it assums that all 5 molds are available all the time, when in fact, we can only run 3 at a time. The system always thinks there are all 5 molds avaliable, so our capacity is overstated

Currently, we run MRP for these items, and the system tells us how much to build for a given week. We look at this demand, and based on that we manually decide how many molds for each item to put on the 3 machines. Ideally, I would like the system to schedule this combination of molds for us, instead of us doing it manually. How can this be done? Is this possible using TRP or the Baan scheduling bolt on package?

There are really 2 problems/questions here:
1- how can I setup Baan routers so that it does not always assume I have all molds available?
2- how can I get Baan to recommend what molds to run on which machines each week based on demand per item? This would not only include chosing a mold, but sequencing which molds to run in which order?