Heya @Synchronos357 , thanks for clarifying this question about Elise - I appreciate it! And my apologies for the confusion with Ubi-Milky's answer.
We're often unable to answer gameplay queries, since while we know a lot about our games, Anno is particularly dense with mechanics and we usually leave discovering those mechanics up to the community. However, on this occasion, I've reached out to another team to see what I'm able to find out about this specialist, and I'll report back with my findings here in the thread ...