Hi Stephane, and Alex

I would also need an “Add channel” block in protocols. There is one “combine channels”, but it allows only to add one channel to another and it scratches the preexisting other channels. I would need to create a 4th channel on an existing image containing already 3 channels. Would it be possible to get an “Add channel” similarly as “Extract channel” where you specify one reference image and another one with the channel to add but preserving the preexisting ones ?

Thank you very much

Lydia