Pan linking to adhar for huf

No, not required.                         

My pleasure.                    

Is it compulsory to link AADHAR with PAN inHUF account?

If Yes how to do?

PAN of HUF with AADHAR of KARTA of HUF?

Not required.

PAN linking is possible only in case of Individuals, hence non individual entities like HUF, Firm, LLP, Company, AOP, BOI etc. are not required to link PAN with anyone's Aadhar.