This tutorial will show you on to monitor a pinterest user on Dashub. There are other ways to do it. You can also do it while you are actually saving the pin on Dashub. This one will show you how to do it manually.
Browse pinterest as usual. Click on the pin of the author you wish to save.
Copy the URL (the address). Go back to dashub.
Click on the "wifi" icon on top right of the appropriate channel.
Write here your content
Paste the URL into the field. Wait a bit, it could take longer than usual.
Don't forget to select the checkbox. Click on Save.