VirtualBox – Use DVD RW Drive in Windows Guest (POPOS Host)

In VirtualBox 6.1, how to I make my DVD RW Drive usable from a Windows 10 Guest? It is hosted in POPOS 21.04. I thought this just worked when you installed the Guest Additions but apparently not. If I run this on my Host:

sudo dmesg | egrep -i --color 'cdrom|dvd|cd/rw|writer'
[    1.236529] sr 3:0:0:0: [sr0] scsi3-mmc drive: 40x/40x writer dvd-ram cd/rw xa/form2 cdda tray
[    1.236535] cdrom: Uniform CD-ROM driver Revision: 3.20

So I was thinking it’s a SCSI interface, so I added this under storage.

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But when I attempt to access the “D” drive in Windows I get an error “Please insert disc”