Im sorry but im still not able to get the instances in my workspace. I have attached the image below.
P.S: I had selected all the rows and columns in the family table as shown in figure and then selected edit.
I was assuming that you were using Windchill, but from the screen shot, it appears that you are not.
You will need to open every instance in the family table and then do a save-as to 'export' the instance to its individual state. Save as Step, IGES or part file as needed. You could write a mapkey that does the Save-As of the current file.
There are some automation tools, Autolit and toolkit, but those may require programming skills.
If you are looking for "FREE" -- check out CREOSON.com
The process would be as simple as listing instance names and then exporting each item found using JSON transactions in your language of choice.
There is also a Python Option if you want something easy to learn/use. Let me know if you have any questions.