A more thorough explanation:

Subsellia is a term used in Roman law to refer to the lower seats in a court. These seats are usually occupied by the parties or their witnesses, and are different from the seat of the tribunal.

• During the trial, the defendant and their witnesses sat in the subsellia while the judge sat in the tribunal.
• The subsellia were arranged in rows facing the tribunal.

These examples show how subsellia are the lower seats in a court where the parties or their witnesses sit, while the tribunal is where the judge sits. The subsellia are usually arranged in rows facing the tribunal.