Silent Mode is very useful in many situations. In this tutorial I tell a few situations I have used Silent Mode. In the video the example was from E-M1 Mkii.
Silent Mode can be found in the Shooting menu 2 in the following Olympus cameras:
Pen-F, E-M5 MKII, E-M1 (firmware 4.0), E-M1 MkII
In E-M10 MkIII and Pen E-PL9 it can be found Scene Mode (SCN)
Older models do not have the Silent Mode.
If you havent seen the previous episodes I recomend you to watch them. The whole Using Olympus playlist can be found here: https://goo.gl/9cPqo1
If you have any questions please ask them in the comments!