How to load diff spreadsheet as database for a common app

my app is based on database spreadsheet-1 , I want same app working but with different spreadsheet-2 working as database

how i can provide selection of spreadsheet ?

Can you post some screenshots? And explain if there is some user action involved in using one spreadsheet versus another?

Hi @codenayak!
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´╗┐Getting an idea of how this app is currently configured would be helpful for understanding how to set up this type of workflow. What would be particularly helpful is seeing how this query is defined and what controls are being used to switch the spreadsheet, just like @ScottR mentioned.