Can I control NPC with my scenario?

[invicredible]

I want to make a Cinema with GTA5.

I have two questions.

1. What tasks do I need to apply a bus stop or road that I designed to the GTA5? I'm not sure which program I should use for design.

2. Can I more the following scenarios in advance?

1. Several buses appear in a row at a the same time and a particular place.

2. More than 10 NPCs board the pre-designated bus.

3. When NPC's boarding is finished one of the NPCs is going to drive to the designated point.

Thanks!