creating 32-bit, 64-bit applications

Where is the settings in Xojo to generate two executable for windows.
MyApp_32.exe (32-bit targets)
MyApp_64.exe (64-bit targets)

I am planning to deploy my application for windows both 32 and 64 bit machine.

there is no such setting.

PS: beta questions better on the beta forum.

Does that mean, created .exe file will run on both 32-bit and 64-bit platforms?
BTW, my machine is a 64-bit machine.

32-bit exe from 2015r2 Xojo works already on 32-bit and 64-bit Windows.