What way it is to be to get two GET methods in the URL by htaccess?
RewriteRule ^adm/(.*)$ adm.php?mode=$1
I\'ve used that for the example
In Perl compatible RegExs a $ is an anchor, which denotes "the end". So remove the $ from the middle of your pattern, after ^adm/(.*):
$
^adm/(.*)
RewriteRule ^adm/(.*)/(.*)$ adm.php?mode=$1&othermode=$2