The taxi rank is configured so that as you approach the front of the line you are walking (shuffling) parallel to the taxis as they drive up to the head of the line. You can easily see the line of taxis stretching into the distance and you can watch who the manager is and how people are loading.
Last year one of the times I went thru there, there were 2 men one at the head of the line and one at the entry point to the line who was moving the people who needed a larger cab or who were disabled to a separate waiting area. As we were standing in line I noticed a backpack sitting on the top of the glass roof so I got the first guy's attention and pointed up. He looked up, grinned and made an eating motion then pointed to himself. We all got a laugh and I was glad it wasn't an unattended bag!
Well, this looks like a good picture on google satellite view. The picture is actually labeled "Avis location de voiture* but that is actually the taxi rank. The diagonal spaces are where the taxis pull up to load. You'll be lined up under the light gray awning, line zigzagging back and forth.
https://goo.gl/maps/sig9TsWXRSs
On the typed address you've got, make sure you've added the 750XX number as that tells the cab driver the arrondissement location.