How would you setup Claw to become expert ib a field given a certain book as a pdf or word doc? And is it better than RAG system with Claude ai agents? Waiting for your thoughts and comments. Comment below for brainstorm ing

Hi, my openclaw bot works fine and as expected most of the time when we were working within the telegram DM. However, I have hard time to add it to my other group chat. The purpose is, besides show off to my friends, I also want to let my friends within the group to use him as an assistants (e.g. check stock's Fundamentals analysis data, or RSI, Support and resistance..etc) . I already tried everything including granting him as admin, enabled all the telegram group policy but it is still no luck. Anyone successfully did this? I tried a group of three and he was able to work, as long as we @ his name. But for the 30 people group, he just so shame that not give a response. thanks for helping / advice. 🙏