Hi.
Try this:
for (let group of dv
.pages('"Work/Projects" and !#type/dashboard')
.where(p => p.status !== "completed")
.sort(p => p.status, "asc")
.groupBy(p => p.status).sort(g => g.key, 'desc')) {
dv.header(3, group.key);
dv.table(["Project", "Start Date", "Due Date"],
group.rows
.sort(p => p.defer_date, 'desc')
.map(p => [p.file.link, p.defer_date, p.due_date]))
}