MacOS DVR Server storage issue (with USB Drive)

[Rwbisme]

I have a mac set up with the Channels DVR Server up and running. I have a USB drive which I have named Recordings and when I try to point the DVR storage to this drive I get the following error.

Error: no write permissions on dvr directory: open /Volumes/Recordings/dvr/.permcheck: operation not permitted.

I can use terminal to open and it works fine. I can also point the DVR to my desktop or internal storage as both work fine. Only have the issue with the external USB. it is formatted and mounted.

Volume name : Recordings
Volume type : APFS Volume
BSD device node : disk5s1
Mount point : /Volumes/Recordings
File system : APFS
Connection : USB
Device tree path : IODeviceTree:/arm-io@10F00000/usb-drd1@2280000/usb-drd1-port-ss@01200000
Writable : Yes
Is case-sensitive : No

Any ideas?

[Rwbisme]

Solved it. Had to go to Settings then Privacy & Security then Files & Folders and click on Channels DVR and hit the arrow key and then turn on "Removable Volumes".