Time tracking
You run work for clients and need to know how many hours it really took, so that costs, margins and the next estimate rest on facts instead of memory. Time tracking is where each person records those hours: with a running timer, by typing a block of time afterwards, or against a Service Desk request. The hours then feed the Time report, project costs, Financials and the comparison of booked against tracked time in Resources.
Plankwork has a Time Tracker page that shows your own timesheet across every board you can open, a timer you can start from any task, a Time section inside each task, and a gentle nudge when a working day has no time on it.
The full chapter, with every step and setting, is in the app: open your account menu and select User manual.