I am not new to solving a sudoku board, but I do not have a lot of experience with harder boards and more advanced strategies (I am able to solve a "hard" board in under 10 minutes, on average). I am currently trying to solve an expert rated board without guessing at all, and have come to a point where I cannot figure out how to continue.
I have been researching some more advanced strategies, and have recognized a Y-wing:  at R6C4,  at R5C6, and  at R6C7. However, I am unsure how to fully execute this method.
I have been referencing this site (found through this post), but I get stuck when trying to figure out which numbers I can eliminate.
As I am currently writing this, I am continuously referencing the linked post as well as the website, and have come to the guess that 1 will be the candidate that I could eliminate (my reasoning being that R5C6 and R6C7 share the number, but cannot "see" each other). At this point, I am just unsure as to where it can be eliminated. My instinct says it can be eliminated from R5C4, but I cannot provide a logical explanation for that.
Is my reasoning correct for assuming that 1 is the candidate to be eliminated? And
What would be the reasoning for determining which specific cells the candidate can be eliminated from?