You use your username and instead of doing Hive account@fhzzl, you use fhzzl from what i understand. That is how you do to transfer steem dollars from bittrex to here. I imagine is the same process. Whoever has a steemwallet should be able to credit you with just your username. Only reason i haven't been able to credit my account because i'm limited with bittrex so i'm frustrated. I have to verify my account which i chose not to do for privacy purposes. Go to steem wallet and choose steem dollars, click on steem dollars, you will see a drop down menu, you will see transfer and you transfer to another user. Same as bittrex because this is what it looks like on bittrex.