I think the books call it "latrine oriented". Most of our chams are, too. Many of them drop it onto the floor at the periphery of their domain. Two of our chams poop wherever, and I have to search for it in their branches. One time I tried these nice new big feeder cups for feeding our larger chams, but several of them used them as toilets, so I gave up on that.
We had one gravid female cham that wouldn't do it until you took her out of her cage. Then she would sit on your hand, hike one leg up on one of your fingers, and another leg to the other side and poop on your hand. She tried it several times. The first time, at first I didn't realize what she was doing. Once I realized, I didn't want to stop her because she had not pooped in a while and I didn't want her to get impacted. So, I just let her rip. But I'm squealing, so my husband grapped the camera for a photo (below). The next few times she tried it we put tissues under her butt. Eventually she began pooping on her own, in her enclosure.
A word of advice, for what it's worth, if you have a cham that hasn't pooped in a while, taking them out for some exercise can really help sometimes. A few times I've just taken a cham out and let it walk on my hands, from hand to hand, over and over again, for exercise, and then put him back in his enclosure and a short time later he's poop. SOmetimes they just need to move things around a bit.
Perhaps we should have a monthly photo theme "poop photos"

. Prizes awarded for volume, placement, technique, etc.