Should the President be immune from suit if he acts as a minister

Dear Editor, 
The matter of the closure of Channel Six TV by the President is very interesting. I however find myself with a few questions for which I seek answer.

It is the custom for Cabinet Ministers to be duly appointed and sworn in by the President, as was done very recently. In the case of the President being the Minister of Information, who appointed and swore him into office in that capacity?