Heating and cooling system in the floor

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Thank you for your help!

For my Building i want to model an radiant surface and a heated floor in the same floor. Is there any convienent way to do so?

I'm not sure i understand. The heated floor/chilled ceiling are radiant surfaces as well. The advantage of "radiant surface", as described above, is that it can be used both for heating, and cooling - it can be installed in all type of building elements: ceiling, floor, walls. Whereas the heated floor can be installed only floors.

sorry, but my question was not clear! I had the radiant surface in the technical floor. so it was difficult for me to meet the requirements because the heating was in the concrete slab and with a layer of air above it I had errors in simulation, so i decided to let just the radiant surface and delete the air layer above.(in this way I gave up the technical floor)

My Problem is, that i have floor heating in addition to radiant heating and cooling in the concrete layer of the floor. Designbuilder only let me set one internal source in the building element (foor).