When appending a system, you can right click on the system's name, or on a Department (which contains talkgroups). The option to append a site is grayed out since you cannot specific only one site to append, It's all of them, or nothing.
Looking at that system, the Portland location (near Corpus Christi) has one talkgroup identified, There are four talkgroups for Billings in Montana, but none (listed) for the plant nearest you. So, once you get the system into a Favorites list, set it to use ID Search (that's under the Options folder at the system level). That will enable any active talkgroup on the system (unless it is encrypted) to be received. If you can identify specific talkgroups for the system used in your area, submit the information to the database.
I did select just the Exxon pulldown and append all the sites, but I still couldn't to download to the scanner. The Valero plant did but for some reason not Exxon. I'll keep trying Thanks
Go back & re-read the bold text comments above. You
cannot append only sites. You either append the whole system, or append a specific Department. If you try to do only sites, the option to append is
grayed out, You cannot append only sites.
Once you have the system appended to a Favorites list, look in your Profile in Sentinel. Make sure that the Favorites list where you added the Exxon plant is set to both be downloaded to the scanner, as well as monitored.
If you are using location control on a Favorites list, be sure that you have your correct location & range set. If your location (in the profile) is left blank, then the location is treated as zero degrees latitude & longitude, which is a spot off the coast of Africa, and
nothing will be in range.