Tensioning or adjusting my alternator/ A/C belt. 2.5 Liter V-6 on 2000 Chrysler Sebring

I changed out my Alternator A/C belt and found that there was no belt tensioner or provision for adjustment of any kind. My belt now squeals whneve I turn the A/C on. Any suggestions??

Asked by for the 2000 Chrysler Sebring