@Anthony Corner,Thanks for posting in Q&A.
From your description, I know you want to set up image carousel screensaver via Intune.
Based on my researching, there is no related function in Intune can achieve this and if you want Intune to implement this feature, we suggest that you submit your feedback to Intune.
https://feedbackportal.microsoft.com/feedback/forum/ef1d6d38-fd1b-ec11-b6e7-0022481f8472
Thanks for your kind understanding.
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