The Block Instances module allows administrators and site designers to manage the way blocks are displayed on a site. Each object created by this module is known as a "block instance". A block instance is a set of conditions that determine which block renders in a specified region. Each block instance can render a single block. This module is designed for use by two types of users. An administrator or developer, that controls all the aspects of the block instances --and the site owner, who sometimes want to change the position of where a block is displayed but does not want to know how the site works internally. For this reason, administrators and developers can determine, for each block instance, which settings are editable, like the block title, or the available regions where the block can be moved.