Not possible to activate Remember Me Checked on a per site basis?

Hi,

I'd like to activate Remember Me Checked site by site, using New Blog Templates. This way, if a user asks me one day to unchecked the case by default, it'd be possible to do it only on his site.
But I can't see Remember Me Checked on the plugin list inside sites in my network. I just can see it on the plugin list insided the admin network. Is this normal?

Best Regards