The general meshing workflow is:
Create a working directory.
Create a new project (or open an existing project).
Create or import the geometry.
If necessary, repair the geometry before meshing.
If necessary, block the geometry.
Compute the mesh.
Check the mesh for errors and edit as required.
Describe the physics.
Generate the input for the solver.
The workflow is demonstrated in a video on the customer site. See Ansys ICEM CFD Process Overview.