If you are looking to make a donation to an online fundraising page, you can only do this by using a credit or debit card. PayPal is not a supported payment method at the moment but this may be something that is introduced in the future.
To make a donation by credit or debit card head to the fundraising page and click the Give Now/Donate button at the top of the screen. You will then be asked to provide the relevant personal details and the details of the card you would like to us.
If you do not wish to make a donation online, you can provide the fundraiser with a cash/cheque donation that they can manually add to their page. Alternately, you could do a bank transfer and the fundraiser could then make this donation to the page with their debit or credit card.