$wgCaptchaTriggers['edit'] = true;
$wgCaptchaTriggers['create'] = true;
$wgGroupPermissions['user']['skipcaptcha'] = false;
$wgGroupPermissions['sysop']['skipcapthca'] = false;
$wgGroupPermissions['autoconfirmed']['skipcaptcha'] = true;
$wgGroupPermissions['bot']['skipcaptcha'] = true;
$wgCaptchaTriggers['upload'] = true;
$wgCaptchaTriggers['addurl'] = true;