I am on monthly creative/cloud billing on my notebook but I have an LR5 license for my desktop computer.
I want to switch my notebook to the same license as my desktop, since I understrand that is allowed as long as I use only one at a time.
How do I do that? Do I have to reinstall?
Yes, it will be necessary for you to remove the Creative Cloud version and install the standalone version of Lightroom 5. You can use your existing serial number.