To find a list of non-cutting restriction enzymes, select your DNA sequence document and go to Cloning→Find non-cutting enzymes. Here you can select an enzyme set and produce a new document table of all non-cutters.
Alternatively, if you have already applied a set of restriction enzymes to your sequence, go to the Enzymes tab on the sequence document and click the Show non-cutters button to see a list of the enzymes in this set that do not cut the sequence.