I got a bit hung up on that too, luckily I found this thread on yotatech with pics of everything
https://www.yotatech.com/f116/1995-3vze-timing-belt-removal-replacement-lots-pics-183911/
There's 4 bolts on the sides of the top idler pulley that attach a little back plate to the rear timing...
Digging into my '94 3VZE in the next couple days to replace the water pump, getting a kit to do the timing belt and pulleys and tensioners and such as well while I'm in there.
First time doing a water pump on a T4R, but I've done a couple chevys (way less intricate) so this should be fun...