How to change profession in resident permit or visa?

dear all friends

I have Diploma in Civil Engineering , i coming in qatar as a Steel Fixer Foreman But before company give me visa as a Mason, (means my residency permit profession is Mason). without my company agreement is Foreman . now my problems around 1 years i am work in company office as a Draftsman & company already Changed my salary & position to draftsman. i have new agreement also from company now i want to change my residency permit , Qatar ID to Draftsman ? i request to company change my qatar id after company asked me bellow paper,

1) School Certificate

2) Old Contact paper

3) New Contact paper

4) 60 QR

they don't tell me detail so kindly anybody give me advice what kind of paper i will send to company ??

thanks