Hi
The trigger you are using does not involve information written to the statement i.e. settled bets. So you should be able to run multiple instances of MFP with different Profiles with this trigger.
Have a look in the helpfile at "Login Window", and also Settings > Betting Options > Ignore all bets except those placed in the current MFP profile.
If they must run in the same instance then it gets more complex as the values for each would need to be written to user variables. There is an article and example trigger demonstrating this
here.