diff --git a/README.md b/README.md
index 64c6867..48bc273 100644
--- a/README.md
+++ b/README.md
@@ -5,7 +5,26 @@ Inserts images into LibreOffice Calc cells based on a mapping table.
 ## Usage
 
 1. Open `znova.ods`, enable macros when prompted.
-2. On the **Vyber** sheet, fill column **H** with image file paths and column **I** with destination cell references (e.g. `Vysledok.B5`).
-3. Run the macro: **Tools -> Macros -> Run Macro...** -> expand `znova.ods` -> `Standard` -> `image_macro` -> `ShowImages` -> **Run**.
+2. On the **Vyber** sheet, fill column **H** with image file paths and column **I** with destination cell references (e.g. `Vysledok.B5`) and optional column **J** is for heigh in pixels while keeping the aspect ration.
+3. Run the macro: Press the button.
 
 Running again clears all previously inserted images and re-draws them.
+
+## Adding a Button to Run the Macro
+
+You can add a push button directly to your sheet/page that runs the macro with a single click. This works in **Calc**, **Writer**, and **Draw**.
+
+1. Open your document.
+2. Go to **View → Toolbars → Form Controls**.
+3. Turn on **Design Mode** on the Form Controls toolbar.
+4. Click the **Push Button** icon.
+5. Drag on the sheet/page to place the button.
+6. Right-click the button → **Control Properties**.
+7. In the **General** tab, set the button text in the **Label** field.
+8. Go to the **Events** tab.
+9. Next to **Execute action**, click the **…** button.
+10. Select your macro:
+    - **My Macros** or your document → library → module → macro name.
+11. Click **OK**, then close the properties window.
+12. Turn **Design Mode** off.
+13. Click the button to run the macro.