This article is difficult to properly name but basically you are here because you would like to sync your collection of photos in Lightroom with a certain kind of page on your website. This kind of page should be called a post-type. A post-type can be a portfolio, a post, a page, an album or whatever else. Those pages are defined by your theme, sometimes by other plugins. The way they exactly work is only known by that theme or plugin.
WP/LR Sync sends and keeps your photos updated with the Media Library. This is its main function.
WP/LR Sync does two more things, less obvious to the users:
You probably now understand that there is no direct natural link between a collection and a page on your website. They have nothing in common. But WP/LR Sync has data (and events) that can be used to sync more things on your website. Of course WP/LR Sync can’t guess how the data should be used or what should be done since all the themes are different.
This glue between WP/LR Sync and Themes is made through the WP/LR Extensions. You can check about the subject here.
Developers, or Theme Developers can make their own extension for WP/LR Sync. That would be the easiest for the users, but they often don’t know WP/LR Sync yet, or don’t have any time to allow to make one.
I made a generic extension called Post Types that covers most of the themes. It basically works with all the themes handling galleries, portfolios, posts or other post-types in a natural WordPress way. You can check the information and tutorial about it here : Post Types Extension.
If you have any further questions, please feel free to ask me below in the comments. Thank you 🙂