Hey you don’t have to apologise, we all started with some tools at some point and had questions to ask. I am sure you could show me more than one things or two about Iclone
So basically you are going to need a Flux Kontext Workflow adapted to use the input/output nodes from Reallusion and of course yes the models (checkpoints that are basically the models, clips that are the way the prompts are encoded for the model to understand them and the VAE that is the way to encode image into a latent so that the model understands it and decode the latent to an image at the end so that you understand it 
)
I can share my WF with you, nothing fancy it is just the default Flux Kontext Workflow where I changed the input image by the RL Ai Render Ui Core node. Should do the trick.
The required models are in the note in the Workflow.
Should you (or anyone else) need help with this, feel free to ask and I will do my best to help you out.
Here is the workflow
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