automatic settlement to particular combination of cost centres and gl codes

HI,

A company uses Plant Maintenance for Engineering overhauls. MM is used for Engineering spares only (i.e. not for goods for resale etc).

The requirement is to set up ongoing Plant Maintenance Orders, one for each item of plant (only 600). The plan is just to leave them open, as they are only used at a simple level.

Anyway, for each PM order, the requirement will be to settle automatically, and to a particular GL code and a particular cost centre.

So, for three different works orders:-

Cost Centre -

> 333 334 335

GL code

1234----

>(X)

1235----

>(Y)

1236----

>(Z)

1) What is the best way to achieve this? I am thinking that GL code will be specified by order type (therefore I will need about 10, corresponding to the GL codes) and cost centre will be specified by Work Centre in each order.

2) How do I set up automatic settlement? Can this be at period end only or instantly when good are booked to the order by the stores.