Hi Krishna,
I may be understanding your question but if you want to add a custom query to a table in Spectrum Spatial 2020.1 you will need to:
- Create a query table using an @ parameter
- Add the base table to a map project (not the query)
- Go to the query tab for the business maps and assign the query to the table
It can be a bit hard to see the spot to assign the query sometimes but you should see a box next to the layer when you can select from available queries, if you don't see a box try refreshing browser or clearing cache.

Unfortunately I don't think you can change values for a query that has already been run, you would need to do the query again. I did write this up as a
feature request on the ideas portal.------------------------------
Duri Bradshaw
Spatial IT Consultant
Insight GIS
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