vice-versa: There are instructions for adding the columns and doing the configuration in the help for the plugin. Open any of the dialogs and click the help link in the top right corner. Have a read, and try it. If you get a column set up, you can easily delete it.
Once you have the configuration done, I think
https://www.mobileread.com/forums/sho...59#post2539859 is a good version of the instructions for actually storing the reading status. That thread has a lot of discussion on this as well.
And if anything doesn't make sense, tell me and I'll try again.