Locations

Locations tab allows to load IPLs.

The only IPL that works in races is Cayo Perico. There are also options to customize things on the island.
Note: for Cayo Perico to work in online race, you must set trigger location anywhere in the city, but not on the island, and then use Save/Publish button in the tool.

LS Car Meet location is under textures, so it's better to explore it when you switch from free camera to vehicle.

Other interiors may not be loaded instantly when you teleport to them, as a workaround you can set checkpoint to interior location and then respawn at this point in test mode.

North Yankton can only be loaded in creator.
WARNING: it cannot be saved to the map, it means yankton will not be loaded in online race.