You can change information (shipping address/shipping method/options) on My Page anytime.
How to edit shipping group
Select shipping group you wish to edit
Click [Edit] on shipping group you wish to edit.
Edit the information of shipping group
When you complete edit, please click on [Confirm].
Confirm the edited information
Please confirm the edited information. If there is no problem, please click on [Save].
Completes editing shipping group.
The above completes editing shipping group.