Step 1:

Go to the ‘Content’ tab and then select ‘Pages’ and ‘Add a Page.’

Step 2:

Enter the title of the page, select ‘External Page’ and click the ‘Add’ button.

Step 3:

Enter the external link in the URL field.

Step 4:

Check the ‘Published’ tick box and click ‘Save.’

Step 5:

Click on the ‘Images’ tab and upload the required images. The page can now be added to a slider by going to the slider items and clicking the ‘Add Page’ button.