Not every asset needs a preview.
For fast and quick previews just use this option.
Current render settings
Use this option to render previews using the currently opened scene render settings.
You can add one or more render presets to use to render your previews.
Add one or more render studio files to get the best previews for your assets
You can add one or more existing previews if you already have some.
You can add as many previews as you want to a single asset to form a Preview gallery. For example, some files are consisted of multiple assets (e.g. variations, different modules, different levels of detail, etc.) and you might want to have a preview for each of them.
From advance settings rollout you can choose where and how the previews are saved. By default Connecter will just add all previews to you current workspace database so you won’t need to worry about accidentally deleted preview files. However, you can choose to save previews in another location: along with the 3d asset itself or in a custom folder.