After you have typed in some very meaningful numbers (e.g.If more vehicles are waiting, the next step is activated (which you have not defined yet). If (roughly) more vehicles are passing the junction than waiting in front of a red light then this step remains active. After the minimum time has elapsed, moving and waiting vehicles are being registered. The minimum time is (as the name implies) the time this step is guaranteed to be active. When you have finished setting up the desired light pattern for this step you now may define a minimum and maximum time the step should remain active.
CITIES SKYLINES TRAFFIC MANAGER PRESIDENT EDITION CROSSWALK MANUAL
Now you are able to toggle the light states like you did in Manual traffic lights.