8 STEPS
1. The Unique Function returns unique rows from the cells you provide it, discarding duplicates. Open your desired Google Sheet, select the area in which you would like place the "Unique" function (Column R for us), then click Insert.
2. With your mouse, hover Function
3. With your mouse, hover All►
4. Scroll down and click UNIQUE
5. The function is now in my cell, but I need to provide a range of data to pull "unique selections" from. The easiest way is to highlight specific cells. Click and highlight your desired cells to sort.
6. highlight the entire range and it will automatically insert into your function
7. Hit enter or click out of the cell with the function and we now see that "15, 16, and 17 are the three unique numbers within rows Q2 through Q11.
8. That's it. You're done.