my $parser = XML::Rules->new(
 rules => [
  'computers,and,other,tags,you do not care about at all' => 'skip',
  '^user' => sub {return $_[1]->{teamid} eq $CONFIG{teamid} },
  'user' => 'as array',
   # only the <user> tags containing the right attribute will be processed
  '_default' => 'as is',
  'tags,with,no,attributes' => 'content',
 ]
);

my $data = $parser->parse($the_xml);