Hi.
I'd like to listed to your opinion about the use of a CPL pilot as commander on CAT multi-pilot operations with a single-pilot aircraft.
I've understood that a single-pilot aircraft can be engaged on multi-pilot operations and that a CPL can be commander on a single-pilot aircraft.
Am I right saying that, if I'm using such a single-pilot aircraft on multi-pilot operations in CAT my commander can be a CPL? Or shall I engage an ATPL instead?
As a reference, here are the definitions:

"Multi-pilot operation" means an operation requiring at least two pilots using multi-crew cooperation in either a multi-pilot or a single-pilot aircraft.
"Single-pilot aircraft":
— for aeroplanes, it means an aircraft certificated for operation by one pilot,
— for helicopters, airships and powered lift aircraft, it means an aircraft which is certificated for operation by one pilot and which is not required to be operated with at least two pilots by Regulation (EU) No 965/2012."

"Multi-pilot aircraft":
— for aeroplanes, it means aeroplanes certificated for operation with a minimum crew of at least two pilots,
— or helicopters, airships and powered-lift aircraft, it means an aircraft which is certificated for operation with a minimum crew of at least two pilots or which is required to be operated with at least two pilots in accordance with Regulation (EU) No 965/2012."

"The privileges of the holder of a CPL are, within the appropriate aircraft category, to:
(1) exercise all the privileges of the holder of an LAPL and a PPL;
(2) act as PIC or co-pilot of any aircraft engaged in operations other than commercial air transport;
(3) act as PIC in commercial air transport of any single-pilot aircraft subject to the restrictions specified in FCL.060 and in this Subpart;
(4) act as co-pilot in commercial air transport subject to the restrictions specified in FCL.060."

Thanks for your comments.