I am confused about this "I can change some stuff, but not much stuff" requirement?

The code from BrowserUk works fine for me. To eliminate the "only used once" warnings, just declare $folder in main:: as an "our" variable. An "our" variable gets into the global symbol table and can be accessed by anybody with the full name without any import/export adieu. Here is a modified main program...

#! perl -slw
use strict;
use Data::Dump qw [ pp ];

our $folder;  #to prevent "only used once" warnings
our $config;

do 'work.conf' or die $!;

print $folder; # $folder is declared above, here in $main
               # not in file work.conf
               # since we are in main, don't need "full name"

pp $::config;  #can use full name here, but not necessary
[download]

work.conf as posted by browserUk:

$::folder = 'E:\FOLDER\Test\WEB';
$::config = {
       license => 'kit-licence.zip',
       programs => [
             #template society =>\%program_work
             'VIKTOR DESCRIPTION PRODUCT' => { 
                    name => 'VIKTOR ', 
                    parameters => [
                           Count_id              => '06 (Viktor)',
                           Birth_date            => '1995-04-30',
                           Marriage_date         => '2014-05-26',
                           Divorce_date          => '2015-03-30',
                           Activities_folder     => $folder.'\VIKTOR\i
+ndependent worker',
                           Activities_format     => 'Enterprise Format
+ (V35)',
                           Description_File_from => $folder.'\VIKTOR\F
+ILE\description.xlm',                      
                    ] 
             },
       ]
};
[download]

works fine. Why isn't this good enough?

As an update, This back slash stuff for file names under Windows is not required. Use the forward slash. That is easier, more portable and completely allowed since I think at least Win98. The modern Window's command line is NOT DOS.