Everything is automated. The library loads the needed binary for the cpu architecture and starts mining.
This app is just a colorful and inefficient UI for the TUmine monero library. This app's package name is already registered as paid and you will receive 95% of the mined coins.
The source files are made available under the terms of the MIT License - the best license!
NOTE: The precompiled native and kotlin binaries are not under the MIT License and when using them you agree to the Binaries License -> TL;DR: Without a purchase of the whole source code of the miner no permission is given to anyone to edit, modify or redistribute the native and kotlin binaries.