Presentación looks like "presentation" and means just that in some contexts. Note, however, that a "presentation" at a conference is called a ponencia and the presenter is called a ponente.
In legal Spanish, presentación has two meanings. The first is "filing." So la presentación del escrito ante el tribunal means "the filing of the motion with the court."
The other meaning is "presentment." La presentación del cheque al pago means "presentment of the check for payment."