Basement egress requirements clarification

[Neil Quinn]

For egress requirements in a basement where I might add egress windows, I want to understand a few things:

1. If a basement already has an external entrance + stairs to the main unit, that should be sufficient right?

2. If a basement has an external entrance + 2 rooms, would every room need an egress window? Or only rooms that aren't directly connected to an external door?

Basement has a very large 1000sqft layout that currently has no walls/doors separating rooms, so I'm deciding how I'd convert it to 2 bedrooms with the least amount of construction. The only bathroom is by the main entrance though, and laundry is where the large 12x20 room is unfortunately.

Below here for example I could possibly open up the storage space with a pass-through to the outside entrance (not sure if that would be sufficient). The large 12x20 room at the top right I could leave "connected" to the outside entrance by not adding a door between it and the recreation area. I'm not sure where the lines are drawn for where egress is required vs not required, but at $4000+ per install and limited space I'd obviously prefer not to use them where I can avoid it.

https://imgur.com/a/G99Jqkx