attest your marriage certificate and children birth certificates from your embassy and MOFA after get letter from your sponsor that mention there is no objection to sponsor your kids, and attach both of your (Husband and wife) salary certificate and bank statement if available, the aproch Madinath khalifa emigration gate no 3 (Family residence section) INSHA ALLAH you will get RP for kids. If both of you have a profession that OK for family status.