Meshing 2 concentrical cylinders in salame

Hello to all,

I am very new to salome and would like to know if the following is possible:

I would like to create a mesh that has structured elements on part of a cylinder and unstructured on another.

I have done something similar in the past with gmsh.

It is possible to achieve this with salome?
If the geometry is needed I can supply it.

Kind regards