How can I switch the paper automatically when printing?

Hello I have two software on a system When printing, one of the software prints on A4 paper and the other on A5 Now, I want to automatically switch the paper to print 1. Some printers have two paper inputs, such as hp 2035. How can I set the first software on the first input of the printer and the second software... show more Hello
I have two software on a system
When printing, one of the software prints on A4 paper and the other on A5
Now, I want to automatically switch the paper to print
1. Some printers have two paper inputs, such as hp 2035. How can I set the first software on the first input of the printer and the second software on the second input of the printer?
2. If I connect two printers to the system, how can I set the first software on the first printer and the second software on the second printer?
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