Order of doing things makes a difference when working from planning - cad - rendering - output. And where you started in a bad place is the CAD model isn't at zero. If you actually need to use labels on models, that will help.
The next is, labels are used if they cover a portion of your material. You aren't using your material at all because you are 100% covering your material with your label. So in that case, just put the texture map in the diffuse. If you open up the material graph it probably makes more sense. There you see that a label is really just another material on top of your base material, and in your case you have a texture map in the diffuse. But if you have nothing in opacity, then you're just completely covering the material below it.
Another, and I know you probably aren't finished with scene setup, is if you have a physical surface for the ground, turn off ground shadows in the environment. Also don't use the default environment, ever. I won't get into why, just trust me on that one.
Any way you look at it, you're in for some work that is going to take some time.
But to start off, you can use the "thin tip" part as your pivot object using the Y axis.
And that starts off the crappy part. You've got to add that to Each marker One at a time.
This is one Really good example where you have a GIANT advantage doing your UV editing in the software you are using. I use Rhino and blender mostly, so I'd do it there. When keyshot imports the model, it will already have the texture you used applied, and as UV map. Because yes, as you group things, keyshot messes everything up, it sucks. I wish it worked on only the immediate group it was in when you choose "model", but it doesn't. And when you choose Part, it doesn't move with the model. So when you animate the whole thing, you get this crazy floating look.
Also you Really only need one label if it's covering the whole thing They are all the same, other than color. So just save it with the color area transparent from photoshop. Then you can change the color of the marker in keyshot based on the material and you only need one material. That's faster than having the change the texture on each one. Set up one, change color. Duplicate, change color, etc. Less clicks, and happens faster. There are some tricks to copy and paste your color codes from hex, or bring in a pallet as well to make adding those faster.
Looking at what you're up against, I would be inclined to start over on the marker aspect. In order to get the marker rolling, you need to either use UV's from the model itself, I'm guessing you used solidworks? Apply the texture map there and it'll come in ready to go using UVs instead of model. Then you can move your model tree around to your heart's content. If you want to use keyshot's cylinder mapping, you need to use Model. So before you do Anything to the model, add it to a group. You don't have to use it, but you'll be happy you have it if you need it.
Also, if you are making 3 rows, add Another group. It should look like this:
Parent Group for translate
Child group for rows
Actual Marker
That way, once you finish a row, you can simply duplicate the row of markers and move them into position.
You still have one marker. So now add the translation to the marker group.
Then add the rotation to the marker.
And here's where keyshot missed an opportunity. You can only pattern the parent group. So you'll have to duplicate the markers by hand. But don't worry, it gets exponentially faster.
Duplicate one, Move it a round number. You're in millimeters, so do something like 50, 75, 80, 100, really just be sure you don't use a decimal but staying on multiples of 5 will be the easiest to spot mistakes.
Now select 2 markers and duplicate them at the same time with the same offset. Now select 4. You see where I'm going with this.
Once you are done with a row, you can duplicate a whole row, which is nice because it allows you to change the offset of those later on without having to select each one.
After you're done there, you just need to change all the label materials.
There are probably a few other ways to handle it, but in general, the order you plan things out is important. Other software is more complicated, but has Much simpler solutions to problems like this. For instance, it's not all that complicated to get the markers to roll the correct amount based on their translation in other software. If you want to get that right in keyshot, you'll have to calculate the circumference, then divide the total translation of the marker in it's Local direction (this could be problematic in keyshot) and multiply by 360, to find out how much to rotate.
BTW, I know you're first year so you might not want to bite off too much, but render time for animations takes a while, but there is really no reason you can't render your markers in a real-time engine like Eevee. You're entire animation would render in minutes, rather than each frame taking minutes. I do see you are using Fuzz materials, so perhaps you have other camera shots planned. If you don't, then don't use fuzz. Also, don't use Fuzz just because you can. Creating a good texture map for the tip is Far more important to sell the markers as real than adding some fuzz. And turn off GI, it adds nothing to your scene, other than render time. The same goes for your spotlight. It's just a reflection object really, so just add that in your environment. It'll render much faster. Adding lights to the default environment is, again, about like polishing a turd. I suggest starting with a "real" environment hdri, turn it Waaaaay down, and add pins or physical lights from there. Physical lights can give nicer lighting, but if it's just a top down light, then it's virtually the same, and they render slower.
Also, is your sweep doing anything? If you aren't using the sweep, don't. (it also looks like it might have double faces on the round part, but it's hard to tell without exporting to something else)
Hopefully some of that helps you think about what you should do with what is available in your own time management for the project.
With animations like this, the order you plan to do things is really important.
