how do buyers get auto assigned to a requisition.

Hi all,

I have a question. These are the steps.

1. Create a requisition with 'BUYER' field empty and submit and approve the req

2. Go to auto create and search for that REQ. Then I see a user's name in the 'BUYER' field.

Now I want to know what is the criteria that will select a particular user as a buyer for particular REQ. Is it any of the below.

a. Charge Account.?

b. depends on the hirearchy?

c. depends on the category of the item in the requisiiton?

Someone please help me in understanding this.

Thanks

RG