The applicable commissioners court or commissioners courts shall require a written plan of operation from an entity serving as an office of child representation or office of parent representation. The plan must include:
(1) a budget for the office, including salaries;
(2) a description of each personnel position, including the chief counsel position;
(3) the maximum allowable caseloads for each attorney employed by the office;
(4) provisions for training personnel and attorneys employed by the office;
(5) a description of anticipated overhead costs for the office;
(6) policies regarding the use of licensed investigators and expert witnesses by the office; and
(7) a policy to ensure that the chief of the office and other attorneys employed by the office do not provide representation to a child, a parent, or an alleged father, as applicable, if doing so would create a conflict of interest.