cannot find app on LG phone, bar code scanner

LG tribute 5 phone, Andriod 5.1.1
I installed the Barcode Reader by ZXing and the phone said the app was install. I cannot find it. When I scroll through all the apps there is nothing that looks like a QR or Barcode reader. Upon going to the Apps application to look at the apps, nothing is shown with the name or an icon that looks like what I am expecting.
How do I find this app and get it started?
Thank you for your time

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