Inventory issued for internal Use

Hi,

We have a scenario where the inventory of the client is to be used internally for Advertising, promotion etc.. What is the best way to record the same. And since this usage is different every time different Expense GL account is to be used for booking it. 

Moreover, since the users preparing such order are not from accounting background they are not aware of the correct GL accounts in the transaction is to be recorded, they are looking for automatic solution to pick up the right GL account.  The item number remains the same but depending upon the usage it has to hit different GL accounts.