@mentions can be used in any comment field to give a shout out to an individual, group, whole company, or external contact (for High Fives). You can enable this feature for your company, if you are an administrator.
1. Click on your avatar/profile picture in the top right of the page.
2. Select 'Manage Features'.
3. Scroll down to the Permissions section. Configure your settings for 'Mentions'.
4. Toggle to enable or disable group specific or company-wide mentions.