BenF V3.2 can the pre trigger be set?

ant9000 wrote:
“You have already tried panning over the buffer, haven’t you? Look at BenF’s PDF manual for a thorough explanation.”

I have read the manual. It states the trigger is centered within the capture. I did, of course, pan the entire buffer. Again it is the post end I am losing. The capture ends before I get the entire signal. If I can shift the pre-post I can therefore extend the post capture. I was hoping I could disable that and set a pre trigger, perhaps in a percentage of the overall wave. Many thanks for your reply.