Subsetting Data for in situ visualization

I want to know can Paraview/Catalyst handle a scenario where Paraview is used for in situ visualization and a mesh is defined for a variable and visualization happens for x time steps out of N time steps for one variable of a simulation, After few time steps I don’t want to transfer the whole variable for visualization only a part of that variable, as only certain part of the variable has changed in between the time steps.
Can it be done with Paraview. I read a paper link below

They have done it using Paraview by using reduction but they have not mentioned how they have done it. I want to know how it can be done using Paraview/Catalyst and if yes can you share any such example

@nicolas.vuaille @Francois_Mazen