I previously worked on creating VSTO and Office addins for MS Outlook, Excel and Word using C# VS. Now I have a plan to build one for MS teams. So, I checked online and found the documentation.
But I didn't found that how I can add custom UI elements (text, buttons etc.) inside a chat window. For example: Teams suggested replies shows suggestions inside button above the chat textbox.
Do anybody have an idea that how I can achieve this one?