I will try and do a little  more explaining about aides and their duties there is a lot to be know  about them and I have noticed the community has a lot of questions I  will try my best to guide you starting with the basics. 
   
    Setting Aide duties as you can see from the aide information screen there 6 traits that may be raised to unlock aide skills. 
   
  Knowing the effects of the duties are important to since there is no explanation in-game I will make one here.
   
    | Duties
 
 
 |       Effect | 
    | Navigator | Responds to natural disasters and may remove seaweed | 
    | Lookout | Increase acquisition rate good for fishing collecting and procurement | 
    | Paymaster | Increase rate of major succession when crafting ( Ex. Master caronnade) | 
    | Store Keeper | Remove random status  Dirty deck, Fire, and Rodents also to prevent the theft from low sailor loyalty | 
    | Lieutenant | Lessens chance disorder status when hit by cannons during ship battles | 
    | Surgeon | Remove random status Plague, Scurvy, Insomnia, Fighting, Mutiny, Discontent, Anxiety, Homesickness |