Hi @smiles1951 If you’re directing your replies to a specific person, just make sure their @name appears somewhere in your message.
If you are replying in response to a posting from someone, simply click the blue oval that says Reply in the comment itself. It will open a blue frame where you can type your reply. Then the person who wrote it will be notified and their name will also appear in your reply.

However, if you go to the bottom of the page and type a comment, if you don’t address anyone specifically, then it will not notify anyone in particular.

Where do you wish your replies to go that landed in the wrong place?