Not all Kontakt libraries expose their parameters to the DAW by standard. This will lead to you not being able to map parameters of the Kontakt instrument instantly to one of the eight slots in Lié as depicted in our software preset tutorial video.
If you face this issue with a particular Kontakt instrument, you will have to use the automation tab of Kontakt in order to make the parameters available for Lié's mapping routine.
Once Kontakt is loaded inside Lié and you opened the instrument you want to play with, click on the "Auto" tab on the left, then on "Host Automation". Click and hold any of the "host parameter" entries below, drag them to the right, and drop them on top of the control element you want to make available for mapping. A "+" symbol will show when you are hovering over a compatible parameter.
For a simple screen recording of the procedure see here: Mapping Kontakt in Lié
Once the parameter's name appears in the list beneath host automation, you should be able to speedmap the control element or choose it from the dropdown list of each of the eight mapping slots in Lié.
Some Kontakt libraries don't support host automation, but do support MIDI automation. In this case, using Lié as a host for Kontakt doesn't offer much advantages. Instead, you will have to rely on the standalone mode of Touché (SE) when you want to control the Kontakt instrument.
Load Kontakt directly in a track as usual, and configure the standalone memory of Touché SE or a hardware preset for Touché, so that it fits the MIDI CCs that the instrument is responding to. The classic Touché offers more possibilities in that regard, compare What are the standalone capabilities of Touché and Touché SE?