This question already has an answer here:
I try to use a relative path for the algorithm "Set style for vector layer" in the processing modeler, but it works only with absolute path.
A similar request is here, but the answer doesn't suit me. It is proposed to copy the files to the root of the hard drive. I need to share the model and the qlm files with external users who may not have access to the root of the disk or whose disk is not named c: / and aren't on the same network.
Would someone have a other solution?