1. A telecommunications system, comprising: a presentation server; a plurality of user devices, each of the user devices associated with at least one conference participant of a plurality of conference participants and connected to the presentation server via a network; and wherein the presentation server receives a presentation; and wherein the presentation server receives at least one video feed from at least one of the conference participants; and wherein the presentation server applies a first transparency level of a first portion of the at least one received video feed and a second transparency level of a second portion of the at least one received video feed, the first transparency level and the second transparency level being adjustable independent of each other; and wherein the first transparency level adjusting how visible the first portion of the at least one received video feed of the mixed video presentation received from the presentation server is displayed to the conference participants and the second transparency level adjusting how visible the second portion of the at least one received video feed of the mixed video presentation received from the presentation server is displayed to the conference participants; and wherein the presentation server mixes the at least one received video feed with the received presentation to form a mixed video presentation; and wherein the presentation server provides the mixed video presentation to the plurality of user devices of the plurality of conference participants during a conference via the network.