Weird Send fader on group track

Hey guys,
I recently watched a video where someone explained his template. Now I would like to recreate the template. At some point he showed his mix console. As shown in the image, there are some group tracks that use sends but do not contain any numeric value. What do I have to do to achieve this send type?
I would be very happy if someone could help me.

Thanks in advance,

This is a C13 screenshot, not C12.
It looks like the send values are still there but they are not properly displayed, the whole 3rd row of the sends is smaller in height. Maybe a display misbehaviour of C13?
I don’'t have that version, so I can’t check.