There is also an additional guest judge in every city.

She had served as a guest judge on the previous season for several shows.

Usually, a guest judge will sit in on the panel every week.

Usually, an additional guest judge sat in on the panel every week.

She then served as a guest judge on the episode.

However she appeared as a guest judge in three episodes.

From Cycles 1-18, an additional guest judge sat in on the panel every week.

The guest judge may offer advice to contestants on their project.

Usually, an additional guest judge will be featured in every concert.

Each week a former contestant joined them as the guest judge.