I have not installed the center wooden glide you are considering but I used wooden side runners. As a result, I am not sure how much help I can be but I will pass on my thoughts. I do know one thing; you want to make sure that when you start hacking into drawer and carcase parts, it is done right since the project is almost finished. The other thing worth mentioning (which you probably know) is that the part being installed is a drawer guide and not intended to fully support the drawer. Side runners are required for drawer support.
Like you, I found no video showing the installation of the center mount wooden glides. MadMark provided the link to the written instructions, which I assume you also saw on the Rockler Web Site under Technical Documents. After reviewing these instructions, I can see why you are looking for some tips.
The major challenges I can see is ensuring proper positioning the center guide and slides so that the drawer slides in and out parallel to the carcase sides and perpendicular to the face frame.
The first challenge is ensuring the cabinet member of the drawer guide is mounted perpendicular with the face frame surface (front of the chest). If you have built drawer frames (the rectangular frames on which the drawers will rest) inside the cabinet this is pretty much done.
If a drawer frame will not be used, then the runners and center drawer guide must be positioned at the back so that these are all in the same plane front to back and the plane is perpendicular with the surface of the face frame. One way to do this is with a framing square. But the framing square may be too long or too short to reach from the face frame to the back plus a framing square may not be accurate. Alternatively, by placing the chest on its back and ensuring the face frame surface is dead level, a plumb bob can be dropped from the face frame to the back from three locations along the face frame. Assuming the surface of the face frame, in the up position, is dead level, accurate readings is the result. If the plumb blob produced accurate readings, all three points will line up on the back and provide a reference line on the inside back of the chest. Then measurements at the front of the chest and back of the chest can be referenced from the same plane.
The next problem is centering the cabinet member and drawer member of the drawer glide in the drawer opening. Measure and mark: 1) the center of the drawer opening at the face frame and extend the face frame center mark to the back of the chest, 2) the drawer front, 3) the drawer back, 4) the drawer guide drawer member (front and back) and 5) the drawer guide cabinet member (front and back). When all the marks are aligned the drawer glide members and the drawer will be centered in the opening. Extending the face frame center mark may require measuring from the center mark at the face frame to the inside side of the chest. Then using this measurement at the back of the chest, the resulting mark will align with the face frame center mark.
The last problem I can see is how to achieve the 7/32" spacing between the drawer guide cabinet member and drawer member. If you can build the drawer boxes and install the drawer glide members (with accurate measurements) so that when the drawer is in place with the drawer guides installed and the drawer resting on the runners, the down facing surface of the drawer member, and the mounting face of the cabinet member are all even and in the same plane, then the adjustment to 7/32" is straightforward. Rip wear strips that are 7/32" thick and install the wear strips so that the drawer sides ride on the wear strips will give the 7/32" space required. Alternatively, milling a wide 17/32" deep dado in ¾" thick stock and then ripping the stock through the center of the dado will produce two L shaped pieces, each with a 7/32" lip. The lip sets on top of the runner and is secured to the side of the runner with single slotted screws. This way the wear strips can be replaced.
The last idea is to consider a test drawer built to the same specs as the drawer boxes. Any mistakes to the test drawer save the final drawer boxes and then if the test drawer fits and works, it can guide installation of the drawer glides. Taking it one step further, a box to represent the drawer cavity of the chest can be built to the same size as a drawer cavity. Both mock ups can be made of scrape plywood nailed together and the drawer cavity only needs to be big enough to allow you to figure out how these things are installed.
I hope this helps but doubt I have provided any insight you do not already have. Anyway, that is all I got and that I hope I have been clear enough for understanding of these ideas. Good luck!