Halo again Santiago.
First you have to run 2nd instance. Then you will be able to enter the 2nd instance settings.
See my setup in 1.jpg.
Then you close the 2nd instance and run the 1st.
See my setup in 2jpg.
Log4OMv2 setup is on 3.jpg.
When the 1st works, run the 2nd. Everything works.