The signature of the person in charge of the progress payment cannot be signed by someone. According to relevant public information, the project progress payment needs to be signed by Party A's representative ... The application for project progress payment generally needs to be signed by the project manager, general project supervisor, Party A's representative, financial and project legal person (or person in charge). The project progress payment can only be signed by the chief supervision engineer and cannot be authorized to the representative of the director. In addition, the following tasks cannot be authorized by the director's representative: organizing the preparation of the supervision plan and approving the supervision implementation rules.