Part 1
GENERAL PART
Chapter 2
OFFENCE
Division 1
Necessary Elements of Offence
ยง 21. Principal offender
(1) Principal offender is a person who commits an offence unaided or by taking advantage of another person.
(2) If at least two persons agree to commit an offence jointly, each of them shall be held liable as a principal offender (joint principal offenders). An offence is deemed to be a joint offence also if an act committed by several persons jointly and in agreement comprises the necessary elements of an offence.
Common purpose
Conspiracy
Contribution
Individual commission
EDIT.