To add a WordPress channel, you must first install the SocialHub plugin in your WordPress environment:
The "Install now" button then becomes the "Activate" button. Click to activate the plug-in and then switch to the "Settings" > "SocialHub" area. An access token will be displayed there, which you can copy.
Now switch to the SocialHub and open the "Account" > "Channels" section. Click on the "Add channel" button next to WordPress and paste the previously copied access token there.
Once you performed those steps, WordPress comments and WordPress posts are imported into the Hub so that you can react to them there or see them in your calendar.