Query regarding taxation of foreign citizen

Foreign citizen and person of Indian origin settled in India. He has family business in India. i.e. he is director /partner in  vaious buiness india before he migrated to India. 

!) Can he continues to be director/partner in business in India ?

2) Can he draw a salary in Rs from company in india in which he is a director?

3) what will be the tds provision ?

pl clarify