7. Where a person carries on a process which includes two or more processes mentioned in the same section of Schedule 1, those processes shall be treated as requiring authorisation as a single process. Where the processes are described in more than one Part of the Section and one of the processes is a Part A process, then any Part B or Part C processes shall be regarded as part of the Part A process and so subject to central control. Where the processes are described in Part B and Part C, then any Part C processes shall be regarded as part of the Part B process and so subject to restricted central control.