How to distribute the catalyst app so that it runs on Mac idiom in Big Sur and still supports iPad idiom on Catalina?

When selecting the Mac idiom, the deployment target is disabled. So, it does the above automatically if we set the deployment target to Catalina and still choosing the Mac idiom and uploading that binary to the AppStore?
How to distribute the catalyst app so that it runs on Mac idiom in Big Sur and still supports iPad idiom on Catalina?
 
 
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