About armrest, A/P and A/T

[hamil]

Hi,

I understand this is question of airmanship and safety, but would like to know if there is anything written on SOP or Ops Manuals about pilot's armrest (it has to be stowed during approach, landing and takeoff).

And about mandatory minimum altitude during descent and approach (visual or IMC) in which the PF must keep his/her hands on control wheel and throttles even though A/P and A/T are engaged?

Thanks.