how can i print out some kind of picking slip for a Transfer Order, that will show bin and lot numbes for each line?

go to the Transfer Order Customization, "Linked Forms" which will show you the Picking Ticket to modify. (If you haven't yet customized this area, you will have to create new versions of the both standard forms ie JBL Transfer Order & a JBL Picking Ticket. The JBL Picking Ticket is where you add your columns. The JBL TO form is where you tell your transfers to use the customised pick ticket.)