How to Set Access Rights for Employee Per Account

Hello,

  1. I want to give access rights account wise / employee wise so how is it possible ?

i.e

  • Employee E1 assigned Account A1 & A2, so when E1 logged in then this user can see only A1 & A2 account & related to this account activity.
  • Employee E2 assigned Account A3 & A4, so when E2 logged in then this user can see only A3 & A4 account & related to this account activity. This user cant see A1 & A2 related activity & details as E2 not assigned to A3 & A4.
  1. How can i customize Invoice / Tax related settings as per Mexican government.

  2. Do we have any API for Account creation / Product creation so i can call it from 3rd party website and account/product automatically created here.

Regards
Chets