To render a property based on the grid inside a template you should use the HtmlHelper extension:
This will render the grid item with the alias "propertyAlias" from the current page models' content.
This will by default use the view /views/partials/grid/bootstrap3.cshtml you can also use other provided grid template rendering files - for example, the built-in bootstrap2.cshtml view by overloading this helper:
You can create your own custom grid rendering file for your favorite or custom grid framework implementation. Tip: copy one of the existing files as a starting point. By convention, if you create your mycustomrenderer.cshtml file in /views/partials/grid you can render the grid property like so:
Possible paths where you can add the custom Grid layout views: