Option to keep the left parts in Hold mode without sustain pedel

I have a halion 7 instrument with bell + pads string playing on the left part of the global part.
How can i keep the part playing even if the fingers are raised on the left part on global part? It should keep playing till I select the next chord on the left part…

Is this possible?

Not yet. We are working on MIDI Inserts, which could provide such functionality.