How do I install cabin air filter in 2002 corolla?

How do I install cabin air filter in 2002 corolla?

I bought a cabin filter to install in my corolla. I was able to partly remove the glove box door so it hangs down and out of the way. I cannot see where the filter goes and Im afraid to start unscrewing things beacause the area is quite close to the passenger air bag. Where exactly does it go and do I have to unbolt or unscrew anything to get at it ? I am at my wits end trying to figure this out. Thanks, Joe