I finally have a wet darkroom set up after twenty plus years without one. I know this question shows my ignorance, but I do not fully comprehend the concept of multiple filter exposures on VC paper.

Is this procedure reserved for "problem" negatives or is it used routinely to get a better result? I have stocked up on Ilford MG paper and I have a set of Ilford filters for 00-5 grade.

Any guidance would be appreciated. Thanks in advance.