Ask about the catalogue, or describe a bulk change to it, in plain language. A coordinator agent works out which you meant and delegates over A2A: a question goes to the search specialist alone, a change request goes there first to find what it would affect and then to the update specialist — which can only ever propose. Nothing changes until you approve the exact diff it brings back.
Gemini can make mistakes. The results table is read from the catalogue itself, but check the diff before you approve it.