Heres a pic of my t-5 on my camaro

Now on the right and left are 2 nuts, which side is for putting oil. Reason im asking is i opened the one on the right and someone told me that, the bolt on the right is never to be opened, if it is i could ruin the whole T-5, now forgive me for asking this but i just need some truth to this.

 

There are two pipe plugs on the passenger side of the trans. Top is fill, bottom is drain.