When a user or donor states that the gift is from an organization a few things change for data entry.
i) the user must enter the Company information
ii) a primary contact must still be entered for the gift
iii) the receipt and acknowledge is sent to the contact, but it is addressed to the organization
Similar to individual donations a payment record will be created.
If the Receipt Option is "Receipt Now" a receipt record will be created in the Organization's name and emailed to the Primary Contact for that Opportunity.