how do I override the account for an item ordered from the catalog

Summary: Project related requisition items order from the catalog need to be charged to a different account.

Content (required):Project related requisition items order from the catalog need to be charged to a different account. whenever I try to order an item from the catalog, I am unable to change the account on the item

Version (include the version you are using, if applicable):22C

Code Snippet (add any code snippets that support your topic, if applicable):