CB Richard Ellis has arranged a 10-year 15,122 s/f lease on behalf of P/S/L Group America LTD at 1140 Ave. of the Americas.  Paul Amrich, executive vice president of CBRE, arranged the lease with Patrice Hayden, vice president, and Fernando Urrutia, associate. Medical information and communications firm P/S/L Group will occupy the 14th and 15th floors at 1140 Ave. of the Americas.  Located at 44th St., the building is set to undergo a redevelopment.  The building's owner and developer, Stellar Mgmt., has designed and conceived an enhancement plan that will include a new exterior glass curtain wall, a technology upgrade, new ground level entrance, lobby and public areas, upgraded elevator cabs, common areas and bathrooms and the ability for tenants to control their HVAC 24 hours a day.  Lindsay Ornstein and Patrick Robinson, of Robinson Ornstein Real Estate Advisors, represented Stellar Mgmt.