Control of Text Panel Pauses

I want to be able reduce pauses automatically to, say, 5 secs from whatever length any may be - maybe over a minute. Currently I can move the threshold for pause length duration but, though I may delete more or less pauses, the pauses I do delete will be reduced to zero and that doesn't sound right in many cases. The effect of 'no pause' is often abrupt and jarring. Can you add a pause duration slider for the shortest pause allowed?