Hello @rahul.kolage,
Welcome to the Quick Sight community! Thanks for your question.
You can use calculated fields to adjust the start day of the week. They will all take a similar form, you just adjust the numerical value in the calculation depending on what day you want to start your week.
Some examples can be found here :
Or you can also create a sample in our Quick Sight Arena and we will be able to help you with the calculation.
you can get started with Arena using the following blog:
Thanks,
Sri