As yianniv has already pointed out, you can use EDDI on it's own, BUT, there is a much sweeter way to have both EDDI & Voice attack for multiple commanders on the same pc.
Lets assume you have three commanders who all wish to have their own Voice attack Profile, then we would use the Voice Attack command '
Switch to another profile'.
I wrote a tutorial a few years back called '
Switching Profiles In Voice Attack Made Easy...'
After reading the tutorial, replace the Voice Attack profile names (Trader, Pirate, Exploror) that I used as an example to say, different commander names.
The Voice Attack '
Bridge Profile' as used in my tutorial is your main Voice Attack Profile OK, this profile will hold all the common ship commands that all your ALT commanders will use, like 'Lights On/Off'', "Speed to 100 Percent" etc, so no need to duplicate these commands in your ALT commanders profiles.
For extra realism, you could put inside the '
Bridge Profile' - "Commander <insert name here> on deak' and voice attack will switch to the corresponding Voice Attack Profile for that particular commander!. It's that easy once you understand how to have Voice Attack switch profiles on-the-fly!