1) I want to assign my own book rating
and/or
2) I want to mark a book as important or significant.
---
1) Built-in Rating System:
- The default rating in "Calibre" is tied to the "author", not the specific book.
- If I add a "star" to a book in my library, it also contributes to the author's rating.
- This is actually a great feature—it helps me find books I've enjoyed.
- The fact that it also affects the "author's rating" is not a problem.
- For "requirement #1", this built-in system is sufficient.
---
2) Custom Column for Book Importance:
- If I want to "mark a book as important", the built-in rating isn't enough.
- A solution is using a "Custom Column", which can actually combine both needs.
---
"Preferences:" > "Add a custom column" > "+"

Quick setup: Choose "Rating"

Enter "Lookup name" and "Column header"
I set "VIF - Very Important File"
> Move the column "before Author"
> "OK > Apply > Restart"
---
> Preferences > "Look & Feel" > "Column Icons" > "Add Rule"
Set: "Icon without text", VIF (#myrating), and add an icon (see attachment)
New icon: "Exclamation mark (!)"
Condition:
Column: VIF
Value: Equals 5

*the icon only appears at 5 stars* !!!

> "OK > Apply > Close"
---
"Now I can assign my own ratings in the new column!"

"At exactly 5 stars", the exclamation mark appears

The new "VIF column" is visible in the left panel

I can "customize its icon"

My "own rating appears"

And of course, it is also visible in the column if expanded

---
On "image #8", this is the current condition setup—adjust it or add more rules as needed!