Adding data sources for desired integration is quite simple.
First, go to Account Settings (in the left menu).
Now you just need to go to the Sources page, click on the integration you want to add and click on the plus button on the right.
See screenshot below:
You will now be taken to your profile within the source you want to add. In this case to your Facebook profile.
Some integrations (like Rank Ranger) require you to enter the authorization token.
For some integrations, you need to have access to the API of the application in order to connect them to Reportz.
To do that you need to find your API / Token key in the application you wish to connect.
You can usually find them on the settings page of any application.
Here are a few examples:
Here you can find API for Rank Ranger or API SemRush.