Selecting corner takers

[rickerts]

I know I'm being dense - but how do you manually select one for the left and right? I can switch between them - even edit the ones and the left and right side - but then the same player, in this case, one whose Right only, appears the left side corner taker.

I just signed a new player, one who is a very good left side corner taker, and would like him to be out there but despite taking control of set pieces, I still can't seem to get him on the pitch