Realize a rit, in 3.7

I am trying to find how to manufacture a ritard in 3.7

In previous versions (I don't know how many back) there was a way to select a range and cause a ritard that one could control.

I cannot find that facility any more. I looked in the handbook but where it says to select properties, all I can find is a way to select a channel.

is this facility still available?