As part of a trustee board, trustees serve on a volunteer basis, can be elected or appointed to a library board for a period of time, and are tasked with the duty of helping to direct the funds and policies of a library institution. In general, the library board of trustees has a role in determining the mission of the library, setting the policy that governs the library, hiring and evaluating a library director, and overseeing the general management of the library. This role varies with every library system.

Trustees are typically elected to a 3-year term. Trustee meetings are open to the public and generally held on the third Tuesday of each month at 7 PM at the Holbrook Public Library's meeting room. Please check the Holbrook's town website for more detail about meetings, which can be reached by clicking here.