Hello @OXE
Well, once created the interpolated meshes are fully editable meshes, so you can adjust the placement of all of them individually. It may be useful to perform a Tool> Polygroups> Autogroups action in order to assign all of the instances their own polygroups, which will make selecting them individually easier.
http://docs.pixologic.com/user-guide/3d-modeling/modeling-basics/masking/
http://docs.pixologic.com/user-guide/3d-modeling/modeling-basics/mesh-visibility/
To adjust the spacing uniformly, it may be easier to simply Ctrl-Z and adjust the placement of your target stage to generate your meshes at the desired intervals.
If you’d like more sophisticated control options for this, the ArrayMesh feature might be a better fit for what you want to do.
Good luck!