How to fix trading account in MT4

[siwach]

I have server for running MT4, and i need to fix each MT4 session with only one account (not allow user to change account), and also do not allow user to perform back test. What is the way to do that?

[okwh]

after MT run-then-closed, check logon records in log file at logs directory of each MT,

[siwach]

Thank you. if you mean i can see log file to check which account was used for login. but i want to disallow user log in with another account except account that they used to apply in our web site.

Note : All MT4 running on our machine.