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+Shielding Effectiveness
+=======================
+
+The **Shielding Effectiveness** extension computes the shielding effectiveness of an enclosure.
+It calculates the attenuation of an electromagnetic field inside the enclosure due to the presence of a shield.
+
+The extension provides a graphical user interface (GUI) for configuration,
+or it can be used in batch mode via command line arguments.
+
+The following image shows the extension GUI:
+
+.. image:: ../../../_static/extensions/shielding_ui.png
+  :width: 800
+  :alt: Shielding Effectiveness GUI
+
+
+Features
+--------
+
+- Configure input parameters including source sphere radius, polarization, start and stop frequency and dipole type.
+- Automatic HFSS setup.
+- Switch between light and dark themes in the GUI.
+
+
+Using the extension
+-------------------
+
+1. Open the **Automation** tab in the HFSS interface.
+2. Locate and click the **Choke designer** icon under the Extension Manager.
+3. In the GUI, users can interact with the following elements:
+   - **Source sphere radius**: Source sphere radius in meters. It must fit inside the shielding.
+   - **Polarization**: X, Y, Z polarization component.
+   - **Frequency**: Start and stop frequency and the number of steps to analyze.
+   - **Electric dipole**: Dipole type selection. Electric or magnetic dipole are available.
+   - **Cores**: Number of cores for the simulation.
+4. Click on **Launch** to start the automated workflow.
+
+
+Command line
+------------
+
+The extension can also be used directly via the command line for batch processing.
+
+
+Use the following syntax to run the extension:
+
+.. toctree::
+   :maxdepth: 2
+
+   ../commandline
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