Dear Preetham,
Maybe someone here in this forum can help you. However, please note that this discussion forum is dedicated to programming Revit using the Revit API. Your problem description and screen snapshot look more like an end user issue to me, since you are not (yet) doing anything programmatically yourself using the Revit API. In that case, you may get more optimal answers to a question like yours relating to product setup, optimisation, usage, and other end-user support issues in one of the non-API Revit product support discussion forums instead:
https://forums.autodesk.com/t5/revit-api-forum/this-forum-is-for-revit-api-programming-questions-not...
So, for instance, maybe you would like to raise it in the more general and much larger architectural forum as well.
Best regards,
Jeremy