Can I get some help on Time Out administration?

[Nevadaref]

Originally Posted by BillyMac

Younger officials believe that the lead's line responsibility ends at the foul line extended.

I can see that for THROW-IN administration responsibility, but not for LINE responsibility!

There is no-freaking-way that the Trail on the opposite side of the court can tell if a player steps on the boundary line on the Lead's side of the court above the FT line extended. In order to have a good angle to make that call the Trail would have to be hovering fifteen feet in the air!