You can apply for the labor quota application through the Tasheel portal or Tasheel offices across the country. You'd need to specify the amount, gender, and professions of your candidates for your Quota application. Please be advised however that the requested professions would need to be compatible with your license activities.
For applying the quota you'd require a copy of your trade license along with translated project contracts that show your need for the amount required. Your office will be also inspected by Taqyeem which is a department from MOHRE to evaluate your office if it fills the requirement for your Quota