You can re-order on the account list.
Please go to
아Settings > Accounts Settings > Accounts Settings, or
Accounts tab > The pencil button on the top-right side > +
For example, if you would like to move the 'AA Card' account into Accounts group, tap the “Pencil” button.
Then you will see ≡ on the right side, you can drag it to change the sort order or change the group.
※ NOTE ※
For example, if you move an account out of the group that was consists of only one account, MoneyManager automatically hides the group from the list.
Should wish to make the hidden group appear again, tap the account that you have just changed and re-set the group name manually.
Card group has been re-appeared on the list of Account Group.