Global/Local Control

With regards to Global & Local control in career mode, what are the exact differences here between the two?
Like when it says with Local mode that you can only control activities related to your job while others are AI controlled, what exact things are they talking about?
Additionally in terms of Salary Cap & Min/Max, 60+,70+ etc etc. These numbers at default, are these the recommended ones to start with or are there others people have found work/mimic the real NFL better? I'm just a little wary about starting a career mode and then being a few seasons in and the contracts/salaries might be off.
Regards, D
Like when it says with Local mode that you can only control activities related to your job while others are AI controlled, what exact things are they talking about?
Additionally in terms of Salary Cap & Min/Max, 60+,70+ etc etc. These numbers at default, are these the recommended ones to start with or are there others people have found work/mimic the real NFL better? I'm just a little wary about starting a career mode and then being a few seasons in and the contracts/salaries might be off.
Regards, D