How to create metrics of specific events in Google Analytics or Data Studio?

On my site, I am firing an event when the user lands on a specific URL. I’m firing another event when the user clicks on a button on that specific page.

When I go to Analytics, I can see the Total Events + Unique events for each dimension (specific page view, button click on specific page).

How is it possible to create a new metric (I assume a calculated metric) to display the Unique Events as metrics for any dimension I’d like to use in a Table?

Here is an example of what I have now:

Event Label Total Events Unique Events
specific_page_views 100 50
specific_page_clicks 20 10

…and what I’d like to achieve:

Source Specific Unique Page Views Specific Unique Page Clicks Specific Page CTR %
(direct) 30 8 26.67
google 15 2 13.34
bing 5 0 0

I have been searching for an answer for many days now and can’t seem to find the answer to this simple question. I will want to create multiple of these Metrics, not just 2.

Is this actually possible with Google Analytics or Google Data Studio? (I’m planning to use Google Data studio)