Anonymous Group on LinkedIn

Is there a way to create a LinkedIn group where people can choose to post anonymously? This is for an online group where I want to let people to ask for help anonymously and the other members can respond to them directly without the requestor revealing their identity. If not linkedin, what other platforms can provide such a functionality? I know some of you are going to say Blind :-), but I want people to be able to see who all are in the group and their profiles, but I just want to have an option for folks to be able to do anonymous activities (posting, commenting etc) in some cases, while allowing them to be non-anonymous if they choose to. And that’s why I started with LinkedIn (also since the purpose is in professional context).