How can I manually add mention into the project?

Firstly, you'll need to go to Project Settings under the project you'd like to add mention to

Then, find Sources tab

You'll see Add mention manually over there

Once you click on Add mention form, you will see a field where you have to enter URL address of a mention you wish to add:

Click NEXT and this window will show up

Fill in the form and click Save to add a mention to the project. After that, they should appear in your results in your dashboard :)