I have asked previous question because I need to eliminate change request as I can. Saving Changes...
John ColePM II| County of RiversideRiverside, Ca, United States
Mansour, I'm not sure how much I can help, but let me try.
A project really has 3 calendars (this philosophy coming from using Microsoft Project software): a Project calendar; a resource calendar and a task calendar.
The way always treat these calendars is the following: the project calendar contains things like fixed dates such as holidays or other hard dates that can't be changed (a regulatory date, weekends, etc).
Once you've established the project calendar, you can apply a task calendar to each task (if necessary). A task calendar might be used for tasks that have specialized dates that do not fall within the normal parameters of the project calendar. Examples might be maintenance windows on weekends (if working in IT or certain construction projects) or tasks in which you are renting specialized equipment or services (like construction equipment) and that is the only window you have to use that equipment before it's gone.
Once you've established the project calendar and applied the task calendars to the tasks that need their own calendar, now you can apply resources and resource calendars. Resources (people) might have their own calendars. An example of this would be if you have resources that work with every other Friday off. Known vacations would be included.
So, a project might run Mon-Fri, but "this" specific resource might have "this" Friday off, but "that" resource might have "that" Friday off.
The answer to your question is not simple and straight-forward, but I would establish your calendars as far out in the future as you think is practical for your project. That will minimize the need for a change requests because things are known up front. Because you are talking about progressive elaboration techniques, I would establish some tasks up-front for the future phases - the tasks can be very rough WBS outlines - and the duration estimates for those should be reasonable enough to allow for back-filling real durations later on. This will be somewhat predictive and allow minimizing the number of change requests that need to occur.
I hope this helps. Hopefully others will have more answers. Saving Changes...
John Cole, thanks for your contribution. Yes it help a lot and I will go review again the course for MS project as it has a lot of things which will help me.
Thanks once again. Saving Changes...
Sergio Luis ConteHelping to create solutions for everyone| Worldwide based OrganizationsBuenos Aires, Argentina
Trying to add something to @John answer let me say. If you modify a calendar then you have to recalculate your project then the project will change. Mainly related to time. With that on hand you have to decide if the change will proceed to be evaluated into your project change management process. Saving Changes...
RAJESH K LProject Manager, PMP| Bharat Electronics, Bengaluru, IndiaBengaluru, Karnataka, India
Both calendars should be in-line or in-sync Saving Changes...
