Gotten this from ROP website:

Awards can also be redeemed in the name of anyone else with an Award transfer fee of Baht 4,400 payable within Thailand, or EURO/US $100.00, or the equivalent USD amount in local currency. If your account does not contain sufficient miles for your preferred Award, miles can be purchased to top-up your account, up to a maximum of 30,000 miles. Simply contact THAI reservations to purchase miles.

Currently, there is a promotion where you can redeem an award for fewer points if you are travelling on TG. As such, you only need 36,000 points to redeem a Y class ticket on THAI.

The ROP member can make a redemption and collect the ticket at any ROP office. There is an office in Sydney:

Sydney, Australia
Tel: 1300 651960 (Australia Wide)
Fax: 61 2 9251 1106

The ticket will be in the form of e-ticket and seats are subject to availability.

Hope this helps.