There are 2 options to white list people (pick 1 of them).
1) (easy but limited)
a) Go to your MySQL server in your control panel.
b) Go to the Configuration Tab of your MySQL server.
c) Fill in the following details:
Player A Adminlevel
Player A Coplevel
Player A Mediclevel
Player A Name / PlayerID
You can do that for 7 players at a time.
Once you are done:
d) Hit Save.
e) Restart your MySQL server.
Now the new levels/whitelists are set. If you wish to add more players, simply replace Player A,B,C,D,E,F,G. As they remain active.
2) (bit harder but no configuration limits)
Whitelisting someone can be done in the database (MySQL server).
To edit your database, you may use PHPMyAdmin: (you find the link to PHPMyAdmin in your Control panel of the MySQL server)
Username: root
Password: yourpassword(as you set it)
Server choice: Your mysql server ID (check your Control Panel).
Once you are in, select "arma3life" --> "players".
Search for your player name and Edit it.
Then change the Coplevel, Mediclevel, ...level to a higher number. That should whitelist you for those slots :)
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Last updated Sat 1 Nov 2014