You can donate to any of the EA Funds by following this link, or clicking the blue button at the top of each Fund’s page.
First, choose the Funds or organizations you would like to make a donation to. You can choose up to 10 Funds/organizations as part of a single allocation.
If you are donating to more than one Fund/organization you'll need to choose how to split your donation between them. By default, all the sliders will be split equally between the Funds/organizations you've chosen. To change this, simply drag the sliders around until you have the allocation you want.