(Another) Question about the roll20 Pathfinder Sheet. (Weapons & Attacking)

When I click on a single attack - as when I am limited to one attack per round rather than my full attack, consisting of multiple iterative attacks - roll 20 automatically rolls 2 dice even though I am only making one attack. How do I get it to not do that? This topic was marginally touched upon in another thread, but never actually resolved. The person seemed to think roll 20 was doing this to, sort of, roll a preemptive critical confirmation even though it was not yet determined whether the initial roll was even a critical threat at all? Is this true? If so, how do I change it so it ONLY rolls the second dice in the event of a definitive critical threat on the initial roll?   

This is a limitation of the 3d dice and roll templates. ;-(  When a macro is executed, all the dice are rolled at that time.  Sheet author's can hide/show output based on some basic conditional logic in a sheet's roll template.  3d dice get rolled when the macro is executed but do not get filtered according to the roll template.  It sounds like the attack roll as well as the crit confirm roll (regardless if it will actually be shown, based off of the crit threat threshold) are rolled at the same time.  There's not really anything you can do unless you create your own ability macro that does not include the crit confirm roll (but then no crits will be rolled).  You can turn off the 3d dice if you don't care for the extra dice being rolled. ;-(