There are two pointer options in SENSE:
1. The first one is needed for the Electrostatic Simulation.
Here the pointer is considered a perfect conductor, there is no dielectric involved. This is a standard practise, usually followed by laboratory tests, where the robotic touches are metal probes. You have, of course, the option to place a glove around the pointer. That glove can be any dielectric of your liking, in order to capture any different glove out there.
Using a pointer like this for the Electrostatic Simulation, the results will show how a metal probe changes the mutual and self capacitances of the sensor.
2. The second one is needed for the Spice Analysis.
Here you need to replicate the Human Body Model and create an electrical connection between your pointer and the ground. If you do not choose this option, your pointer will be considered floating, like a coin over a sensor. The most common representation of this type of pointer is a capacitance in series with a resistance (usually 100 pF and 1500 Ω).
Having those two pointer options, you first establish the influence of any pointer to the capacitances of the sensor and then you decide where this pointer is electrically connected to.