Crossword puzzle clue "level job starting position"

___-level job (starting position)

Starting a project ... and what the letters between the starting and ending pairs of letters in each starred answer are doing?

Starting at the highest level

Low-level pollution or high-level protection

Warning sign at a train station's food court? (NOTE: The original sign, without my additions, actually exists. It's in Grand Central Terminal in NYC, on the lower level — the food court level. The sig

Class, level or class level

Management level or theater level

Left hand's starting position, for typing