The work in nature does not call for any full day assignment. So, you can very well work from home and if need be you can visit or go to have meetings.
Your can bill the company on project basis. Suppose you have to prepare HR Policy Manual.For this you will require peer company's data, survey reports of nearby industries ,data analysis,preparation of report, discussion and approvals of Director. For this assignment your professional charges should be approx.Rs. 100 K - 150 K .Logistics involved will be extra such as Travel, Lodging and boarding at actual.