Since wiki pages are collaborative, you can work on them with other people on your team. If you need a specific person's input somewhere, you can use @ mentions to get their attention.
While editing a wiki page, type an @ symbol followed by the beginning of a person's name.
Select a person from the suggestions list.
The selected person will get a notification that they were mentioned in the wiki page.
While wiki pages themselves are collaborative and can be edited by anyone, you don’t necessarily want a lot of discussion happening on the content page itself. Instead, you can discuss a section of a wiki page in its own separate conversation thread.
Click the Show section conversation button at a section's right margin.
A conversation pane appears on the right, showing the conversation thread for that section of the wiki page.
Enter a message and click Send.
You can chat with other team members about this section of the wiki page, and the conversation will also appear in the team channel.