if you bought real estate template from ordasoft ordasoft.com/Joomla_templates/Real-Estate-templates/
You take with it Quick start package - where from you may build real estate site in 5 minutes.
In OrdaSoft Quick start package - you will have all modules and plugins what we user for build that template already preinstalled
Images to slider in real estate template - go from images what you set to property in Real estate manager component.
Setting for self slider - you may configure from Joomla module manager