How Much Do You Salt a Protein When It's in a Marinade?

Emmy asked about salting and marinades. She said she's been learning a lot about salting foods from salt fat acid heat but one of the things she's wondering about is how much you salt a protein when it's gonna be in a marinade. I guess it depends on what is in the marinade and to exactly what type of meat or what size of meat you're marinating so if we're talking Thanksgiving or a chicken or a big piece of meat on the bone you can kind of like go for a whole day or even two days.