Neb. Rev. Stat. § 43-3713

(1) All government agencies, service providers, professionals, school districts, school personnel, parents, and families shall cooperate with all reasonable requests of the court appointed special advocate volunteer. The volunteer shall cooperate with all government agencies, service providers, professionals, school districts, school personnel, parents, and families. (2) The volunteer shall be notified in a timely manner of all hearings, meetings, and any other proceeding concerning the case to which he or she has been appointed. The court in its discretion may proceed notwithstanding failure to notify the volunteer or failure of the volunteer to appear.