Loading and unloading duration based on schedules

Hi,

We are creating schedules of type 1000 and then based on the ports sequence maintained , the freight booking is created referring the schedules.

Now is there any way in the ocean freight booking/schedules  we can maintain loading and unloading duration/No of days  for respective ports .

Kindly do not suggest to use planning profile settings for loading and unloading duration determination logic.