How to Set a Default Printer or Adjust Receipt Printing Options in the 1st Mile App
Set the default printer and/or change how many receipts print from the 1st Mile app.
Open First Mile Icon on the Desktop
This screen will pop up – Hit Cancel 
This screen will pop up – Hit Cancel
Go to >File > Configure
When the configuration box opens, click Receipt
Printing options are located at the bottom of the window. To prevent receipts from printing automatically, simply deselect the “Automatically print receipts” box.
Alternatively, you can also set or change the Default Printer here. Simply click on Select, then choose the printer you'd like the receipt to be sent to from the printer window.
Once you've done that, click OK and fully exit the program.
The next time you process a credit card, only the HITS receipt requiring the customer’s signature will print.
If you set these options to choose a new default printer, your receipt should be printed from the device you've selected.