NBA Timeouts

[leafsfan1967]

Hey guys. Two more questions:

1. I know each quarter has specific rules saying at which times mandatory timeouts have to be taken. If teams call the timeouts themselves before the cutoffs (eg 3 minutes, 6 minutes, 9 minutes) and the mandatory timeouts aren't needed, how is it determined which full timeout is 60 seconds and which is 100? I know each quarter has a specified required number of 100 second timeouts but not sure how it works when a team calls full timeouts to negate the need for the mandatory timeouts. I can see a quarter where no mandatory timeouts are called by the refs but rather each team calls the timeouts themselves before the applicable required time. In which case it isn't clear to me how it is decided which of the timeouts are 100 seconds and which are 60 seconds.

2. A timeout is required to be called before the 6 minute mark of first quarter. What if no full timeout has been called but a 20 second timeout has been called? Would a mandatory timeout have to be taken at the 6 minute mark?