The UI of the Custom distributions page is quite similar to that of the Official distributions page, but with some differences on the Edit and Preference pages.
On the Custom distributions Edit page, the "Enable China Sync" checkbox is deselected by default. If you need to make your distribution available to download in China, check this box.
The other difference is on the Preferences page. Other than subscribing to email notifications, you can set the selected Custom distribution as a favorite, meaning that it will appear under the Favorite tab on the main page.
Custom distributions will have some components hidden depending on the user’s permission. In a restricted Custom distribution, other developers will not see the "Add builds" and "Edit" buttons.