A more thorough explanation:

Second chair refers to a lawyer who assists the lead attorney during a trial. This may include examining witnesses, arguing points of law, and handling parts of the opening statement, closing argument, and voir dire.

• The experienced attorney chose a young associate to be the second chair for the high-profile fraud case.
• During the trial, the second chair cross-examined the prosecution's key witness.

These examples illustrate how a second chair works alongside the lead attorney to provide support and assistance during a trial. The second chair may take on important responsibilities, such as examining witnesses and arguing points of law, to help the lead attorney build a strong case.