The fundraising option allows you to sell tickets towards a fundraising goal. Once enabled you will see a progress slider in the event so you can quickly see how your fundraiser is progressing.
There is an option to disable ticket sales once the target has been reached, or you can exceed this limit and continue raising further funds.
The fundraiser option is configurable in the Payments tab of the event editor.
When setup the goal can be seen in both the event and the event listing pages.
A DEMO can be found by clicking DEMO Fundraiser