In the below sentence, should “implement” need to be in a first person form or third person form as it is now?
This Regulation is set up with a view to ensure that subject people comply with ruleA and ruleB, and properly implements their responsible works.
If implements refers to the Regulation, it must be singular. If it refers to subject people then it should ideally be plural to agree with comply.
The sentence could be ambiguous, but the number of the verb indicates what is doing the implementing. It is the verb which disambiguates.
This Regulation is set up with a view to ensure that subject people comply with Rule A and Rule B, and [the Regulation] properly implements [the people’s] responsible works.