Most clinics can facilitate embryo donation. Some of these clinics have a waiting list that you can join or donate to. Others offer embryo donation only if you have already found your own donor or recipient.
IVF Australia offers an online community for those considering embryo donation, which aims to 'facilitate connections between potential donors and recipients in a secure, private space'. There is counselling and an appointment with a fertility specialist first. See http://donation.ivf.com.au
If your clinic does not facilitate embryo donation, it is usually possible to move embryos to a clinic that does.
If you have questions about where you could find a clinic that can facilitate a particular procedure (e.g. donating a single embryo), contact us at firstname.lastname@example.org. There are also Facebook groups where you could enquire about others' experiences.