Once the recipient has created his own Dynadot account, you can move (some times this action is referred to as a "push") the domain into his account by following these steps:
1) Log into your Dynadot account. 2) Click on the "Domains" link in the main menu at the top of the page. 3) On the "Manage Domain Names" page, choose the domain you wish to move by clicking on the check box next to the domain's name. 4) Press the "Change Account" button. 5) In the "Domain Change Account (push)" box, enter in the recipient's forum name in the text box. 6) Click the "Change Account" button to initiate the move.
An email will be sent to the recipient of the domain(s) asking them to confirm the move. Once the recipient accepts the move, the domains will automatically be moved from your account to the recipient's account.
NOTE: The recipient must accept the move before the domain expires. Otherwise, the domain must be renewed before it can be moved.