Hi, 

We are facing issue with making relations between modules.. our project is very simple 

we have 2 modules.

1 - Contact module.

2- Vehicle module.

each customer from the contact list has one or many vehicle.

what's required ?

1 - One the contact page we want visibility of the vehicles related to that contact ... not all vehicles.

2- adding vehicle details when creating deals.

we have tried to use multi-select lookup, but its not serving the purpose as its bring all vehicles not the associated ones.

looking for a solution.

thanks,

Hassan