PHOENIX — Three companies have signed leases with Related Urban totaling more than 30,000 square feet for space in the firm’s Offices on High Street, located in CityCenter of CityNorth in Phoenix. Capital Processing Network has signed an 8-year lease for 18,136 square feet. The company will occupy the top floor of a three-story building on High Street starting in September. Alaris Business Centers has signed an 11-year lease for 15,000 square feet of office space on High Street. The firm will also occupy the space in September.