Inter-App Audio on multiple tracks

When I have sampletank connected via the inter-app function for a track I use a midi keyboard to record live onto the cubasis track, I’d like to do that on multiple tracks changing the sound each time and recording each onto a track in cubasis. I apologize but I am new to midi recording. When I set up an audio track with sampletank as the input, it seems to only accept sampletank with a mid track set up and then it looks like sampletank will be locked into that track. Therefore if I create another midi track it tells me sampletank is already being used. I am concerned that even though there are many sounds I can use on sampletank you can’t use it on more than one track in cubasis