First things first, let's add a new screen to your Adalo app. Just click on that "+" button, then pick "Screen" and choose the type you want (like Blank, List, etc).

Head over to the Components section and search for "Custom List". Drag and drop it onto your screen. Feel free to move it around and resize it as you like.

Click on the Custom List to open its properties panel. Under the "Data" section, pick the collection you want to show in the list. Make sure the collection has the data you need.

Time to make it look good:

• Click on the "Add Item" button in the properties panel.
• Add components like text, images, buttons, and icons to the list item.
• Arrange these components however you like.

Each component in the list item can be linked to data from the collection. Just select the component, then set its content to a specific field from the collection (like setting a Text component to show the "Name" field of items in the collection).

Set up actions for list items if you need to:

• Select any element within a list item (like a button or the whole container).
• Click "Add action" from the properties panel.
• Choose an action (like Link to another screen, update records, etc). Configure the action based on your app’s logic.

Preview your list by clicking the "Preview" button at the top right. Check if the items look right and make any tweaks if needed.

Once you're happy with how everything looks and works, save your work. This way, all your settings and customizations are safe. Your custom list is now ready to roll in your Adalo app.