Go to your project options, and move to the Sources tab. After that, you can press on Add mentions manually. Here is the view that you will be presented with:
Entry address: URL of the post you’d like to add
Entry title: It can be its title or part of this mention
Mention content: add the content of the mention
Entry category: choose in which category you’d like to see it
Sentiment: Positive, Negative, or Neutral
The date that entry was created: specify the date the mention was created
After adding all necessary fields, you can click on the Save button et voila! The entry is added and from now on it is going to be counted into the statistics in the Analysis dashboard.
NOTE: not all mentions can be added manually, only public mentions are collected by Brand24 and only those mentions can be added to the dashboard.