You can shoose which search results presentation you will see in the RNC by default when searching for exact forms or for lemma and tags. This can be done by using the options menu next to the Search button. 

Only those search results presentation types are included in the list which are available for the chosen corpus and for your query search conditions.

If no favourite search results presentation was chosen, the search results will be shown in the Concordance mode. If you choose another presentation type, your preferences will be stored by the broswer, and after that you will see the results in the selected presentation type every time you hit Search. The favourite presentation types are chosen separately for each corpus.