Help connecting Fibaro box to 2 switches

Dear community i have this switch connected to a fibaro box. The dimmer is set up and it works with the first switch. I have a second switch that should turn on another light in the room, there is no connection with the switch and the second light the connection is between dimmers. the second switch does not work on the other light even if the group setting in the app is set up. Can u guys help me? is there smth wrong with the connection?