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docs/getting-started/installation.md

@@ -23,12 +23,35 @@ Get the latest release from the [plugin releases page](https://bitcoin-after.lif
 ![Electrum Tools menu with Plugins](../img/install-electrum-plugins-menu.png){ .screenshot }
 *Electrum → Tools → Plugins.*
 
+BAL is an **external plugin**, so it is added from a `.zip` file:
+
 1. Open Electrum and go to **Tools → Plugins**.
-2. Choose **install from file** and select the BAL zip.
+2. **Internal plugins** are listed in the dialog — you toggle their checkbox to enable or disable them.
+3. **External plugins** such as BAL are imported from `.zip` files with the **Add** button in the plugins dialog.
+4. Some plugins (hardware wallets) are enabled automatically when you create or restore a hardware wallet.
 
 ![Install from file dialog](../img/install-from-file.png){ .screenshot }
 *Selecting the plugin archive.*
 
+### First-time setup: the plugin authorization password
+
+The first time you load **any** external plugin, Electrum asks you to set a **plugin
+authorization password**. Two things to know about it:
+
+- It is **independent of your wallet password**, and it can be reset if you forget it.
+- Setting it requires **administrator (root) permissions**, because Electrum writes a
+  password-derived public key into the system. On later startups that key lets Electrum
+  verify the plugin's authenticity without asking you for the password again.
+
+!!! info "Why administrator permissions are needed"
+    This is an Electrum security measure, not something specific to BAL. The elevated
+    permissions are what stop **malware from silently installing or modifying plugins**,
+    or from tampering with the stored key. External plugins can only be enabled by
+    someone who can enter that password — so a piece of malware running as your normal
+    user cannot enable one behind your back.
+
+    Full details: [plugins.electrum.org](https://plugins.electrum.org/)
+
 ## 3. Enable and restart
 
 Tick **Bitcoin After Life** in the plugin list, then restart Electrum.
@@ -51,3 +74,9 @@ Step-by-step installation notes for specific platforms are kept in their own rep
 
 - [Windows installation](https://bitcoin-after.life/gitea/bitcoinafterlife/bal_plugin_windows_installation)
 - [Linux installation](https://bitcoin-after.life/gitea/bitcoinafterlife/bal_plugin_linux_installation)
+
+## More on Electrum plugins
+
+For how Electrum's plugin system works in general — internal vs external plugins, the
+authorization password, and the plugin directory — see the official reference:
+[plugins.electrum.org](https://plugins.electrum.org/)