I too am looking for a way to manage these settings. We're specifically looking for a way to disable the show recent apps. We have various "teacher" apps hidden away in a folder at our elementary levels, which works fine, but if a teacher uses those apps, they're front and center for a student to see, which is just too much of a temptation.

I suspect until Apple allow them to be managed there is probably no way JAMF can effectively manage them.

I need this option too.

There is a Feature Request for this search "iOS 11 dock", please go and up vote if you haven't already.

I mention this to my jamf Reps during our onboarding and they couldn't find a setting to control this feature (this was a couple of months ago). Then I brought it up to both my regional Apple Systems Engineer & Sale Rep and they were in disbelief that Configurator or jamf didn't have a way to modify this setting. Once I show them there wasn't a way to do this they promised they would look into it for me. I haven't heard anything back from them yet, but at least some people at jamf as well as Apple are aware of this oversight and hopefully they will address it soon. I will up voting this request.

As long as Apple does not open the API to be modified there is no way for any MDM vendor to control this setting / behavior. Even in Apple‘s very own Profile Manager you’re not able to toggle this.

Is this still unavailable?

I believe this is still unavailable 😞  Sad, i like a clean home screen and dock

It's now 2023 and the issue still exists.  Apple needs to permit JAMF to manage this.