electrical

Depends on the plan. Most residential plan drawings I have seen are minimal layouts. They show where outlets and switches are to be located. Even this is pretty general, since they are not dimensioned. The drawing should show what kind of outlet is in each location. GFI, duplex, and so on are indicated by symbol.

TB

That iis true. The electrician usually places the outlets to comply with the spacing requirements and what the customer requests on the pre drywall walk. That may require additional outlets. They do have to identify the GFCIs to get through plan review. If nothing extra is specified they just get placed to comply with 210.52. A good CAD design program will place the receptacles.