Can we change the pivot points of any GameObject?

Questions & Answers
1

Or before importing it to our project pivot should be changed?

2

You can embed your model inside an empty GameObject and position it wherever you like - this allows you to create any pivot point if you then use the outer game object.

It can be easier to make your models correct first.

3

I have tried many things, but have not been able to do it from Unity itself.

The best I have been able to achieve was using modeling tools like Studio Max → Collapse - Skin + Editable Mesh
-Then from an animation tool – Reset and Freeze the Pivot
,I have tried many things, but have not been able to do it from Unity itself.
The best I have been able to achieve is using modeling tools like Studio Max → Collapse - Skin + Editable Mesh
Then from an animation tool Reset and Freeze the Pivot