Relatively new to MS Project and have come across an issue, I've searched through threads to see if I could see anything similar without luck, so apologies if this has been covered previously.
The base scenario is that I've produced a high level schedule with activities and durations (in days) without resources or work inputs. A key stakeholder wants to understand scenario planning options.
My base case intention was for 10-hour days, so each entry of 1 day would be equivalent to 10 hours (even though I didn't change the working time in calendars).
My second case is to switch from day shift to night shift which would essentially have the same number of hours, however I wanted to add in 20% contingency. I couldn't figure out a blanket way to attack this, so I just increased all the durations by 20% (i.e. 2 days is now 2.4 days). I don't quite think this worked perfectly, either. (Anyone care to weigh in?)
My third case is working 6-hour days instead of 10-hour days, to determine the impact it has on the final construction completion date.
My hope, misguided as it may be, was that I could have my base plan at 10-hour days (changing a few options and calendars in the base plan), and then simply modify the working hours / calendar to spit out my other scenarios.
If I did change the calendar to 10-hour days, Monday to Friday, the durations for each activity would change from 1 day to 0.8 days. Is there something I need to change in task type, or do I need to re-enter all values? I even tried changing duration to hours and entering 10 hours after modifying calendar and it pushed 1 day activities into the next day ... unsure why.
Any suggestions on how to tackle this in the most appropriate way? Is it possible without assigning resources and work efforts etc?