In order to make any URL indexed, the first step is to import the URL.

Here you will see the two options
- Import URL from file (If want to import URL from any file in your device)
- Import URL from clipboard (if you want to import any copied URL)
for example: If you have copied any URL so you have to select Import URL from Clipboard here. you can see it here as shown:

Now you have imported the link to be indexed successfully.