Email task owners about unfinished work that is approaching or past its due date.
Remind creative owners of deadlines and log each notice in the sheet.
Your task owners get timely due date reminders by email. Your team hears about overdue work, and your Google Sheets task list tracks notices.
Remind creative owners to update deliverables before due dates.
Owners get due date reminder emails, and your project lead sees who has not posted an update by the milestone cutoff.