Event Interference also allows the user to erase one reality and overwrite it with another (a different world that is a result of an existing possibility). In other words, it imposes a result of a certain phenomenon from a parallel world into the current world. It changes a possibility into reality.
Event Interference can be undone by the Demolishing Blade Manifestation: Kusanagi.
The Takamagahara System used an extortionate amount of Event Interference during the Continuum Shift, using the scattershot event to pick-and-choose which timeline they favored when getting closer to the Blue; this stopped when Hades: Izanami seized control over the AIs.
Certain characters are capable of resisting it to some extent, such as those that are outside of the reason, like Valkenhayn R. Hellsing, and to an even greater degree, those that wield the Power of Order, such as Hakumen and Jin Kisaragi. However, it does not include environmental alterations. Hazama also possesses a certain level of resistance, as him being affected is proof that the Master Unit is considerably close.