It doesn't work that way McGrath. You can't impeach two people at once. Each person who is impeached is first investigated as an individual by the House Judiciary Committee, where hearings are held. If that committee passes an impeachment resolution and accompanying articles, it goes to the full House for a vote. It requires a simple majority to impeach.

The resolution and articles are then handed up to the Senate, who tries the person being impeached. The Chief Justice of the Supreme Court presides over the trial, and rules on points of law, evidence, etc. At the beginning he swears in all 100 senators, who serve as the jury.

House managers act as prosecutors in the Senate part of the trial. House managers during the Clinton trial were all Republican members of the House Judiciary Committee, lead by Rep Henry Hyde, then Chair of the committee.

Conviction requires approval by a 2/3 majority of the Senators present at the time the vote is called. If convicted on any article, the person is considered immediately removed from their office, without any further vote.