Hi @Juliavs,
When using aperture groups we need to link the groups to the grids. Right now this is only possible if you create the grids with the HB Sensor Grid from Rooms component. There is a workaround though; you can check my message in this topic. You can add a grid and a room to the custom Python script. If you do this all the aperture groups in the room will be used in the ray tracing of the grid.