Capture the week on a phone, from rows that already know the plan.
On a phone the same week is a stack of project cards with a bar at the bottom carrying the totals and the Save and Submit actions, sized for a thumb. For most people, most weeks, that is the whole job: check the rows, adjust a day, add the Friday you took off, submit. Hours are prefilled from the assigned days in the plan, so a full week on one project arrives complete and needs only a confirmation.
Timecards covers weekly entry, leave entries and Submit week, and My month shows a person's month at a glance. Submitter is a seat for filling in time, with Timecards and My month. Five Submitter seats are free.