Hi everyone,
I just bought the license and I’m trying to understand some things. What is the right workflow to be able to export the mesh with different textures? Because now I export the mesh with a single and unique 8K texture.
The photos I load are 100 in all and are from 4k.
My steps are these:
I do not know if I have to do uwnrap, is there a guide for a correct workflow?
thank you so much
Yes, there is plenty of advice in the Help (in program), FAQ and here in the forum! 
You can set the texture parameters either in the Reconstruction Settings or wit Reconstruction - Tools - Unwrap you can do that as a separate step and then texture accordingly…
I’m sorry but I only found two threads where he says to use the unwrap tool but does not say the procedure.
Could you tell me the link for the tutorial? or tell me where to set up
thank you so much
Told you already: Reconstruction - Tools - Unwrap 
And I guess that you haven’t spotted the in-program help yet?
You need to activate it by the dropdown menu in the top right corner of any viewport.
There is a general introduction with descriptions of the different settings.
I’m sure with those keywords you will find more in the forum or you can ask more specific questions…