In all three claims sections, as well as the Notices section (secured claims, unsecured priority claims, unsecured non-priority claims, and Codebtors, Insiders and Notices > Notices), there is an arrow that allows you to move the claims to different schedules. Once you click the arrow, the option to move to D, E, F, G, or Notice Only will appear.
***Hint: If you move a claim to "Notice Only" it will appear in Codebtors, Insiders and Notices > Notices. Once a claim is moved there, you may move the creditor back to a claims section, but the balance, account number, monthly payment, etc will be removed.