The correct statement regarding the ‘casting vote’ in the Parliament is the one provided in option 2.

1. The casting vote is indeed cast by the speaker or a person acting as such. This person has the authority to use the casting vote in certain situations.

2. The casting vote is cast in addition to voting in the first instance. This means that the person with the casting vote can cast their vote along with the rest of the members of the Parliament, and then use their casting vote if necessary.

3. The casting vote is cast in the case of equality of votes. This means that if there is a tie in the voting, the person with the casting vote can cast their vote to break the tie.

However, the statement in option 4, that the casting vote is always cast to maintain the status quo, is incorrect. The casting vote can be used to either maintain the status quo or to change it, depending on the decision of the person with the casting vote.