CID Finder (https://cidfinder.com/) allows you to get the CID number using the Google Maps business page URL.
GoThru makes it easy to change the size of a constellation area. You can resize a constellation to shrink it down to fit in the map area or to make it larger to cover up more area.
Changing your listing name that shows up on GoThru and Google Maps is fairly simple.
Here are some simple steps on how to embed a Google overlay virtual tour on your facebook page.
Here's how to select multiple panoramas in the Edit Constellation page.