This user manual provides an overview of how to use the software developed to support the empirical investigation of a simulated user interface for an Advanced Integrated Multi-sensor Surveillance (AIMS) system (formerly known as the Enhanced Low-Light Level Visible and Infrared Surveillance System - ELVISS). The AIMS system is an electro-optical imaging system being developed by the Defence Research and Development Canada (DRDC) - Valcartier to enhance the capability of search and rescue (SAR) crews to operate effectively at night and in degraded weather conditions. In order to ensure that a SAR operator would be able to use the system effectively and with a minimal amount of training, a prototype human-machine interface (HMI) was developed to evaluate design concepts. The latest development phase added important tracking and motion-related functionality (amongst other things) to the system and gave it a new name AIMSsim.