Best n Easy way for Update??

I mean among 4 duration types which one is to be used,
and among the 3 options availabe for % complete type which is tobe used for typical construction schedules.
The progress monitoring criteria is by using only one resource (Manhours).

Please post your suggestions.

A Schedule might involve two things, Time or Money, so it depends on what is most important for you.

To measure Time or Money,

1. More Time means more Money (?).

2. More Money does not necessarily mean more Time.

3. Time is natural while Money is what?

4. Time only moves in one direction - clockwise (this is why I wonder why "backward pass" is necessary?).

5. And how Money moves?

6. I think it’s easy to find Time, and to find Money?...

7. Time always accumulates (like your age), and Money?...

8. And I supposed all Businesses were established to find Money and never to find Time (?).

So what is most important?

Ahmed,
Duration Type is not related to project updating, but to resource assignment: it tells P6 how you are willing an activity to be re-calculated when you change one of the three parameters in a resource assignment, i.e. activity Duration, assignment Budgeted Units, assignment Remaining Units / Time
According to Paul E. Harris, the most appropriate set-up for an Engineering & Construction project is:
a) Physical % Complete, because you will really measure the progress of work by going to the building site and taking what is there into account, instead of accounting the number of days since the theoretical actual start date of the activity, or the number of hours the resources should have consumed
b) Fixed Duration and Units, because when you enter the original duration for a specific activity, you do not want the software to re-calculate it if you change the amount of work; if the duration is to be changed, you are willing to enter the new duration yourself.
ma3a salama,
Alexandre

Thank you all for your kind support.

Salman