Exclude webmaster via cookie

Sorry guys, can’t find the plugin or the setting. Where to look for, how to apply?
Tia
c.f.

In settings > User settings.

thanks, but still no idea. Don’t find an option there. the exclude via ip-address is in the global website settings, but where is the cookie thing?
[attachment=1191:Piwik.jpg]
regards
c.f.

It’s between the Save-Button and the headline "Anonymous user settings"
and really missing in your screenshot.

I don’t know if Piwik stores these pages in the cache, but you can try to
delete the files in /tmp/templates_c/.

cleaning the tmp/templates_c folder did it, thanks. should have thought about that by myself… puh