RFT basically just means that when the account is bought, all they need to do is change the rare named accounts name and put the rare name on their own account.
All you need to do is apply membership to the rare named account and change the name, in 28 days the name is essentially "RFT".
It's done so that the buyer is at less risk of the seler recovering the name and re-selling it.
1) Become a member on the acc
2) Change the name
3) After 28 days the name becomes RFT, because once the name has been changed again it can be put onto any account.