Functional location

hi

we are using Functional location to keep track of our sold equipment and customers. Customer, factory and our equipment is the structure. However we need also to find a way of keeping track of where in our customers factory these equipment are installed and maintained - i.e. our customers functional location. There will be a one to many rellation here, one customer location and several of our equipments.

Does anyboddy have any idea of how to maintain this.

Thanks