From what I have seen online, working one row even is just a normal row with no increases or decreases. However I am not sure I understand what part top work even. This pattern had a cable/moss pattern on a stockinette background.
This is a fingerless glove pattern from yarnspiration.
Shape palm: (ws) Dec 4 sts evenly across St st panel; work to end-40sts remain;22in Cable/moss,18 in St st.
Change to smaller needles.
Establish Thumb Gusset: (rs) work across to marker, [k1-f/b] twice;pm, work to end in St st–42 sts; 4 sts in St st fot the Thumb Gusset between markers. (ws) *Work one row even.
I don’t really follow the thumb gusset section I posted. Thanks on advance for any help.