If you notice, I have two parent tags called USGS & USGS 2. These tags point to a different USGS site location (Cribbs Mill Creek & Black Warrior River). From that parent tag, I've made two child tags with two analog status. I have an analog status for pulling the discharge, cubic feet per second and the gage height of both cribbs mill creek & black warrior river. How do I associate two different JSON URLs into one parent tag ? Also, if you notice the discharge from Oliver Dam Discharge says, "21,000" How can I make that number that will be easier to read ?

In short, you'll need one JSON tag per address, but you can select any driver for a any I/O tag (I'd recommend you update the Analog Status and Calculation tags to use the I/O and Calc Tag Types). IF you look at your tag properties currently. You'll notice that the attached driver is [*Driver] which tells the tag to look up the tree and use the first driver it finds (In most cases this driver is the parent tag).

You can use Context tags to create a parent/child structure where you don't have things like driver or port tags.

IE:

• [Context Tag]
  • [Port Tag 1]
  • [Driver Tag 1]
    • [I/O Tag 1]
    • [I/O Tag 2] <-- If you wanted, you can manually link this tag to Driver 2 by changing [*Driver] to whichever driver you like.
  • [Driver Tag 2]

As for the 21,000. There is Scaling in the tag properties as well as places after the decimal and units. You can use each of these to set that number to whatever you would like.

@ArghDave What if I do not know the port information ? I do not know the Serial, TCP/IP settings.

The JSON/XML driver does not need a port as the URL is in the properties of the driver. It will always do a HTTP(s) get request the same as entering the request into the URL field in the browser.