Automating Multiple Applications on 1 phone in 1 test Project in C#

My Company is testing our some applications on an android phone. They have an Application installed onto the phone, including a launcher, and 2 other applications. Is there a way to automate using appium without having to pass in Application. Its already installed onto the phone and setup before testing. I dont need the actual application to start the test.

Note: is there any professional help I can get. Maybe a phone call from a support line, or someone that could answer questions I may have using appium? Its very difficult to use with terrible documentation.