"With Citavi you can work in teams of any size anywhere in the world. Share your knowledge and achieve your goals together. Save projects on a local network drive, on an SQL Server, or in the cloud on servers located in Germany. All team members can access the project at the same time and work independently of one another" (Citavi, 2021).
Chatting with team members:
Citavi Manual 6 says the following about Citavi chats:
In cloud projects you can chat with other team members. When might you want to do this?
The chat is available as soon as more than one user is online:
Citavi. (2021, March 31). Your knowledge toolkit. Citavi. Retrieved from www.citavi.com/en
Citavi. (2018, April 11) Chatting with other Team Members. Citavi 6 Manual. https://www1.citavi.com/sub/manual6/en/index.html?chatting_with_other_team_members.html