Embed the donation widget to allow individuals to search for trips and people to give through your organization and events.
To do so, go to Organizational Settings > Sharing > Embed Widgets. From there, you can scroll down the page and view all the different things you can embed into your website. These are intended to be easy for you to use so you should be able to just copy/paste, but your web team can likely help if needed.
When this is embedded into your "Donate" button on your website, the page will look similar to this when people click on that button: