carry tolerances forward to like tolerances "warning"; one answer for equal bilateral zones

when editing the tolerances zones (+,-), and the zone is a bilateral equally disposed zone, have a setting where the warning message will then change the pos and neg allowance at one time, rather than having the message pop up for both the pos and neg tolerance.  This can be accomplished currently by keying in the value and tabbing to the next value, however, there are times when using a ten-key pad and mouse, that this is not as user friendly (tenkey pad doesnt typically have a tab key on it).