Many auctions hold a Fund-a-Need section where bidders can bid to donate money to either specific projects or to the event more generally. This is handled in Auctria by creating Donation Items.
There are a number of ways you can do this:
Single Donation Item
Create a Single Donation Item, with a title Fund-a-Need (or however your organization prefers to label it) and set the type to Donation but leave the value blank. If you want, you can set the Item# to something easy to remember, for example, "NEED" rather than using a generated number.
When you record donations against this item, you will need to select the bidder and enter the amount of the donation.
For more details on recording donations see Record a Donation.
Multiple Donation Items
If you accept donations for certain levels only, say $100, $500, and $1,000; you can choose to create three donation items, with suitable titles and set the value to the dollar amount of the donation. You may also want to use meaningful item numbers, for example, "NEED500" to represent a $500.
The advantage of this approach is the amount will automatically be populated when you select the NEED500 item to record a donation against it, however, this may not scale well if you have a lot of different levels of donations.
You can also skip having Donation Items altogether and just record the "donations" directly off the Donation tab of the Record bid, purchase, or donation page and leave the item row empty. These will appear on Bidder Statements as cash donations.