You can simply enter a pattern under board tiles (ex. A**b) and anagrammer will give you words that can cross these letters.
See the example below. The example scenario is your tiles are “A,N,A,G,R,A,M,M,E,R,?”
On the board there are 2 words, you want to cross first word at T and second word at S, and there are 3 spaces between them.
You just enter T***S on the board tiles, and voila: