Keep in my that DP will offer you 16 midi channels for each VI instrument you open. You can only use channel 1 on each instrument since they are not multi-timbral.
You may also consider opening the instruments in the V-Rack so they are available to any sequence you are currently running (i.e. you may have three or four sequences in a single DP file and want all your VI's available to every sequence. If you open the instruments in the mixer rather than the V-Rack then they will only be available to the sequence to which the mixer belongs.
There JWL, parts 1 + 2 of Basic DP (though I probably got something wrong.)
You may also consider opening the instruments in the V-Rack so they are available to any sequence you are currently running (i.e. you may have three or four sequences in a single DP file and want all your VI's available to every sequence. If you open the instruments in the mixer rather than the V-Rack then they will only be available to the sequence to which the mixer belongs.
There JWL, parts 1 + 2 of Basic DP (though I probably got something wrong.)