1. Press Shift instead of Caps lock.
2. Use animation 1 and make cutscene(s) with dialogues.
3. Y => Actor => Add actor => Choose actor's skin => choose actor weapon => animation ''Sit in nearest car" (must have a car spawned nearby) => Driver seat => Attack player (or something like that)
4. No idea about this.
5. Impossible to do that at the moment.