These are found in the main Controller marked Concord.
This is because some of the choices -- e.g. collocation horizons -- may affect other Tools.
When you have computed a concordance, the Concord button will have a red number (showing how many Concord windows are in use) and at the bottom of the screen you will see an icon (). Click that to see the list of files and their features.
WHAT YOU GET and WHAT YOU SEE
There are 2 tabs for settings affecting What you get in the concordance and What you see in the display. There is a screenshot at Concord: viewing options showing the options under What you see.