You can always "quote" the message you're referring to. This automatically attaches the user name, and I'm pretty sure that person will receive a notification in their inbox.
that feature doesn't work in my group, I don't know why I'm not able to do that.
I'm gonna do some research,
Thank for the help ^^
Quoting only works from the "main" forum. Most likely due to how Michael's coded it. Not sure if it's actually intentional or an oversight. Probably an oversight if I had to guess.
Same thing when looking at threads from the Community tab (Japanese Quick Help) vs the Forum.
Here you can see that the "Quote" link is missing:
You can see it if you open the thread in the forum:
PS: There isn't an easy way to open Study Group threads in the forum. I think it only sends you there if you follow a link from your inbox. There *is* a workaround if you know how to get the thread id from the code, but that's not really worth doing unless you wanna test something.