The submission account editor is available by clicking on the "Edit" button next the selected Account under the "Submit to Apple" heading on the "Packing" Page.
The information entered into the "Account Name" field is for you to help recognize which account to use. Especially useful when there are multiple accounts.
The e-mail address used to log-into Apple's developer system.
This is a password create specifically to use when submitting applications to Apple for Notarization or App Store Submission.
Apple's guide on creating App-Specific PasswordsUsed to confirm if the e-mail address and app-specific password are correct.
If the app-specific password is forgotten, there is no way to recover it, it must be recreated using the link above.
These options are not needed by most developers, however they are there if you need them.
When used in conjunction with the team shortname, helps Apple identify exactly which iTunes account to use.
This field is for commands that we're not aware of yet, which Apple may request be included when submitted software to their services.