telegram bot help

My goal is to have bot on the group chat replying in there on specific trigger words.

i have created chatbot in telegram with @BotFather.
Im using this website www.sendpulse.com to create automatic reply on specific trigger words.
My problem is when i use trigger words in group chat, Chatbot sends reply privately not in group chat.
need someone to setup a chatbot so it reply in group chat.