Currently I can only manually install programs with lines of code and not by repository's, any suggestions welcome as I wish to install RemotePC to monitor multiple nodes on multiple Raspberry PI 4 8GB's. I only ask as between my eyesight and terrible typing I have to rely on someone else to setup anything, so any help is appreciated?  

I need to install remotpc and apart from having a guy from Poland manually doing it, I have no idea how to do so, do I need to update or something as if it would accept repositories this wouldnt take months of going no where?