Overriding Plugin Templates
You can override all templates found in victheme_property/templates folder by creating an new folder with this structure templates/property/ in the root of your theme.
Then copy the templates files that you want to override from victheme_property/templates folder into the newly created folder in the {your_theme}/templates/property/
Afterwards you will need to visit http://yoursite.com/wp-admin/admin.php?page=vtcore-configuration and click on the clear cache button to refresh the core template cached folder.
For overriding property agents templates found in the folder victheme_agents/templates , You must create a new folder called templates/agents in your theme root folder and copy the template file to be overridden to it.