An apparatus for generating a fluid meniscus to be formed on a surface of a substrate is provided including a housing where the housing includes a housing surface to be placed proximate to a substrate surface of the substrate. The housing further includes a process configuration receiving region that is surrounded by the housing surface. The apparatus also includes a process configuration insert which has an insert surface where the process configuration insert is defined to fit within the process configuration receiving region of the housing such that the insert surface and the housing surface define a proximity face that can be placed proximate to the substrate surface of the substrate.