today I will answer to this question: “You have 2 tasks which own different task calendars (Standard 5day and 7day calendar). They are connected FS and have a lag, lets say 5 days. Which calendar does the lag use?”
OK! I will show you that in MS PROJECT 2013. First let me create 7-days calendar with MY CALENDAR name:
Now, I am going to modify MY CALENDAR:
OK! Now I will add four Tasks to My Project with 10 days duration each:
Now I will tell that TASK 1, and TASK 4 have MY CALENDAR, as default Calendar, and TASK 2 and TASK 3 have Standard Calendar as default Calendar. I will show that settings only on TASK 1, and you can do the same thing with other Tasks:
Finally I get:
As you can see Task 1, and Task 4 will start on Monday, 25.02.2013, and will finish at Wednesday 06.03.2013, because the work will be performed during a weekend. On the other hand, Task 2, and Task 3 will start on Monday 25.02.2013, but will finish at Friday 08.03.2013, because the work will not be performed at weekend.
Now I am going to connect Task 1, and Task 2, and Task 3, and Task 4as well, and I will get:
Everything looks fine! Notice that Task 2 will start at Thursday 07.03.2013, and Task 4will start at Saturday 09.03.2013.
Now to the point! I will put a 5 days lag for Task 2, and Task 4:
and I will get:
Now, the explanation:
- Task 1 will finish at Wednesday, 06.03.2013
- Task 2 will start after 5 days lag, at Thursday 14.03.2013. That is because Task 2 has Standard Calendar, so this 5 days of Lag is only working days (means: Thursday 07.03.2013, Friday 08.03.2013, Monday 11.03.2013, Tuesday 12.03.2013, and Wednesday 13.03.2013)
- Task 3 will finish at Friday, 08.03.2013
- Task 4 will start after 5 days lag, at Thursday 14.03.2013. That is because Task 4 has MY CALENDAR, so this 5 days of Lag is working days + weekend (means: Saturday 09.03.2013, Sunday 10.03.2013, Monday 11.03.2013, Tuesday 12.03.2013, and Wednesday 13.03.2013)
To conclude, MS Project 2013 uses for the lag, the calendar of the successor.