Floating license mistake

My company bought a floating license for Quartus Prime. I have a windows workstation on which I installed the license server. I also have a Linux virtual machine on my windows workstation to which I am trying to assign a license. I tried to add a computer on the self licensing center and I made a mistake saying the license for the Linux box is fixed. How do I remove this entry? Also, how do I assign the floating license to the Linux machine?