There are several methods. Some only have a cap. Others have a cap with a resistor. Sometimes the resistror is wired paralel, sometimes in series.
Results vary with different pickups, amps or even player's tastes.
Best way to find out what works for you is by experimenting. I would advise a metal film cap instead of a ceramic disc.
On my Gretsch Power Jet I installed a WIMA 0.001 uF cap without a resistor on the master volume.
The resistor ruined the volume taper so I took that out.