Hello Srinivas,
1. Per week one period and Three working days per period is two different requirement,
For per week one period you can achieve through :
Per Week one period
Calculation rule:
Weekdays :
Counter week day =1
Week day = 1 ( Every week system consider first Monday, one period created for per week)
Three days per Week
Calculation rule : Weeks (week Days)
Select 1,2,3 : system consider first 3 days per week ( Three Period created in this case)
Both are different requirement
As working days in planning calendar pick from the factory calendar. If your factory calendar have only three days working per week,system behave accordingly that
2. Yes, for second question
System consider 1 day for first two period and for last period cover all day up to next period date.
I hope this information helpful to you
Thanks & Regards
Umesh Mali