Ring of Wizardry II

I am sure I am missing something obvious that I have to do, but my wizard has just acquired a ring of wizardry II. I have added it to my sheet, and equipped it.

As a result my Arcana skill has increased by 2. But I can’t see anywhere that I can record my extra " two 2nd-level spell slots and one 1st-level spell slot."

Am I missing something obvious or is there this ring not yet fully implemented?

Thanks in advance.