From the description I cannot see how to set a break point if this is possible at all. Only "Find" seems to work something like "go to a breakpoint".
During debugging normally I go down to some level ("break point") and then run on one level using (s). But when I come to a Redo I have to use (return). Often I run too far seeing the Redo too late. Sometimes (r) helps in such situations. But some key working like (s) at Call/Exit/Fail and working like (return) at Redo would be very helpful in fast debugging.