Open the corresponding 3mf file with "Open project...", select your filament and nozzle, use 0.2mm layer height, slice it and switch to the temperature tab. Check that there are multiple temperatures. --> Print and have a look at the results.
The author remixed this model.
I opened the 3mf from MK3S+ in Qidi Studio and added custom G-Codes on every 50th layer from layer 6. So probably only works for 0.2 layer height. G-Code M104 S### where ### is the new temperature. The first layers are printed with the temperature configured in the filament. This is my first remix, suggestions welcome. For now I do this for PLA as I need to print PLA. Will add the ones for PETG and ABS/ASA when the time comes.