All the bookmarks are stored in the appropriate history window.
The title of the bookmark is made up by the contact’s name and the first couple of words from the message string.
Keep your description short and write it so that it helps others decide whether to request membership and whether to set up notifications to keep tabs on what’s being discussed in the room. Depending on how your organization has decided to use Skype for Business persistent chat, you might have access to useful web-based applications that can make the room a more productive place for your members.
Business Insider obtained a PDF guide that is sold online for just £2.59.