You can only log ICUS if you hold a CPL or ATPL.
In Command Under Supervision (ICUS) The conditions for logging of ICUS are at CAR 5.40 and include the following:
- the pilot flying ICUS must hold either a CPL or an ATPL;
- the pilot flying ICUS must make all decisions relevant to the safe operation of the aircraft;
- the pilot must hold a command aircraft endorsement for that type;
- the pilot must hold a command instrument rating if the flight is conducted under the IFR;
- the operator must permit the person to fly the aircraft as pilot acting in command under supervision;
- the pilot in command of the aircraft must be appointed for the purpose by the operator of the aircraft.