The first INI it finds after that is considered the master. If -no-default-inis is given, mob will skip 1) and 2). Use mob inis to see the list of INI files in order. Mob builds a list of available INI files in order of priority. Mob has two ways of setting options: from INI files, the MOBINI environment variable, or from the command line.
If OpenSSL is built from source, perl is required ( Strawberry Perl 5.30.2.1 installer). Some third-parties are not normally built from source, but this can be changed in the options by setting the various tasks in to false. The Visual Studio solution for Mod Organizer itself is build\modorganizer_super\modorganizer\vsbuild\organizer.sln. Mod Organizer can be run from install\bin\ModOrganizer.exe. Once mob is finished, everything will be in C:\dev\modorganizer.