Can't delete shares on Drobo 5N


I have scanned the internet and found many people who have the exact same problem, yet no where do I find how anyone resolved it.

I have 3 shares and wish to delete 2 of them and then create 2 larger ones. The two I wish to delete are Time Machine shares.

I have stopped time machine for the two macs and am unsure what else I would need to do that may have the share trapped.

Any suggestions are welcome.