Possible to use a custom course thumbnail that shows in member's account panel?

Hello, I'm new to exploring the Courses and Member Sites options to see if they are a good fit. My apologies if I missed something obvious, but I'm not seeing any option to upload a main Course or Member Site thumbnail image? Something to visually identify and brand individual digital products.

What I'm seeing is if a member signs up/purchases multiple courses, in their Account panel after they sign in I'm only seeing they are shown generic Squarespace color icons -- which isn't overly brand friendly or identifying. Image example is attached.

Can anyone share how/if I can simply upload a main thumbnail for each of my digital products? Hoping its something I'm just overlooking. Thank you for your time!

Mark

I am also wondering the same thing! Haven't been able to find any solution.