A committee votes when debate on the thing in front of it has finished. That happens in one of two ways. Either the debate time runs out, or a motion to move to the previous question passes. See Motion to move to the previous question.
Everything a committee decides, it decides by a vote. A resolution, an amendment of the first degree, an amendment of the second degree. Each of those is voted on in turn. Every amendment is put to a vote, even a change of one word.
There are no informal votes. Every vote is real and counts. A chair cannot take a quick show of hands to see which way the room is leaning and then treat it as practice.
If an amendment of the second degree passes. The amendment of the first degree passes with it. The two are then counted as one, and the first degree amendment is not put to a separate vote. See Amendment of the second degree.
Before the vote, the chair tells the house exactly what is being voted on. If it is an amendment, the chair reads the amendment out again. Not everybody has been following closely, and a delegate cannot vote properly on something they did not hear.
The chair then states that the committee is moving into voting procedure.
In MEDIMUN, the committee state is set to voting in the chair's control panel in MediBook before the vote is taken. The state is always declared, with no exceptions. See Chair committee state.
The chair asks for votes in favour, then votes against, then abstentions. Delegates raise their placards when the chair asks for that answer, and not before.
One delegation has one vote. One placard goes up for each delegation.
In MEDIMUN, one delegate represents one country in a committee. THIMUN seats two delegates on one country in some of its forums. MEDIMUN does not do this.
A delegate recorded absent at the roll call cannot vote. A delegate recorded as present and voting may vote in favour or against but cannot abstain. See Roll call and Present and voting.
In MEDIMUN, voting happens in MediBook. That is not something a chair may choose. A roll call vote goes through MediBook as well. See Voting in MediBook.
During voting, all points are out of order. The one exception is a point of order about the conduct of the vote itself. See Point of order.
A point of information is out of order. A point of parliamentary inquiry is out of order. They wait until the result has been announced.
The chair counts each answer. The chair records all three numbers, including the abstentions. Abstentions do not count towards the result either way, but the chair still records how many there were. See Abstentions.
A resolution passes when the number in favour is greater than the number against. A tied vote fails. See Pass thresholds and Tied votes and recounts.
The chair announces the numbers, then the result, then what the committee is doing next.
If you are unsure. The chair never says whether the thing being voted on is good or bad. A chair who does that will draw a point of order, and deserve it.
If a resolution as a whole has passed, the house may clap. Clapping is not in order at any other point. See Clapping and conduct during voting.
A motion to divide the house may be moved after a vote. It removes abstentions and the house votes again. See Motion to divide the house.
Each resolution is debated in a vacuum. If one resolution on a topic passes, that does not discredit another resolution on the same topic.
SCREENSHOT: /medibook/sessions/22/committees/ga1/debate/control - the voting panel with a vote open and the in favour, against and abstention counts showing