In effect It's look a good work!
You can access the property for the selected host, symply using the property menu:

Main form will be cleaner and will show more informations!
Check computers and TCP ports status
This is the main screen of properties editor:

To change the value you can write or use (depending on property kind) the small button on the right (to change the boolean value, select a file etc.):

I'll expose in details in next blog.