Can SAP CD support a single payment request with multiple sub-items?

Hi everyone, I'm wondering if SAP CD will support a single payment document, with multiple sub-items. The business scenario is that employees will be able to cross-sell two different products, and having both items on a single document would reduce financial overhead. Can this be accomplished in Customizing, or be added via custom work?

If the above is possible, then as a follow-up question; Can CD support a cross-company code payment document with the BP Item in one company code and the GL Item in a different company code?