Kaihatsu-ryoshu were assumed the position of the officers' organization, such as Gunji (a local government for Gun territory), Goji (a local government official for Go territory), Hoji (a local government official for Ho territory), and Bechimyo myoshu (a local government official for Bechimyo territory), and guaranteed the local load rights, which included the rights for shomu (land management) centered on Kanno (encouragement of agriculture) of developed fields, private tax collection of zoyaku (odd-jobs tasks) and buyaku (labor service), and judgment of criminal cases.
郡司・郷司・保司・別名名主などの職の体系に補任された開発領主は、開発田の勧農を中心とする所務、私的な雑役・夫役の徴収、検断権といった根本領主権を保証された。