Oregon only states that it should be in plain view and easily read by the public. ORS 803.540 Section 1a and 1c. It is not stated that it should be viewed "Horizontal" like some states specify. Looks to be legal
yes
take off the license plate then screw the holder on with the plate.
yes
no
Not if the license holder is too tired to stay awake or is sleeping. The license holder is deemed to be 'in control' of the vehicle - that is the reason for the law about accompanying a permit holder exists in the first place.
The motocycle is not yours. You must write to the lien holder and ask them if they have any ojection to you disposing of it.
Under the seat in a clear plastic holder.
no
No, you need a license from the holder of the trademark.
This information is always posted somewhere on the license itself. The time varies for the type of license you have, the age of the holder of the license, the particular State you live in, etc.
As long as someone who has a drivers license is also in the car at the same time.
The series 6 license allows the holder to sell mutual funds and fixed annuities.