uh... let me stop this girl, no offence hunnie but what i am understanding your telling them to use the idler pully... yes is moves like a tensioner but when used for that = big possible problems... i will even include a picture for the illiterate..and i will color code it all to make things easier...
Brown circle- Power steering
Blue circle- Idler pully
Purple circle- Alternator pully
Green circle- A/C if applicable
Yellow circle- Water Pump pully
Pink circle- Crankshaft Pully
and finally...
Red Arrow is your tensioner.. get a socket wrench w/o socket and place square end into hole or knotch w/e you want to call it and push down to release pressure, and short breaker bar may also be needed to get you more leverage... if you cannot figure out the tensior from this then you have some serious problems...