Medford (Mass.) Contributory Retirement System is searching for a manager to run $1 million to $2 million in a closed-end real estate commingled fund focused on the apartment sector. Requests for RFPs must be submitted in writing to Martin Coughlin, analyst, at New England Pension Consultants, fax number (617) 374-1313. The deadline for submitting RFPs is 4 p.m. EST Feb. 26. This is a new mandate, said a spokeswoman for the $100 million retirement system,and is the result of a reallocation of assets.