EIC can inform the Associate Editors' tasks that have been delayed and their due date is expired. It is the EIC's decision to whether extend the due date of AE or replace the current AE with another AE. To see a list of all manuscripts with AE delay, go to "Review Tools" (in the left menu) and click on "Delayed AE."
To extend a due date, EIC can click on the title of the desired manuscript and, on the open page, EXTEND the "review due date" by day number.
To replace AE, EIC can click on the title of the desired manuscript, and on the open page, click on the "peer review process" tab and replace the AE.