Doc: Installation-guide - improve

Divide Installation process from Launch process

documentation/user/installation-guide.md

@@ -15,24 +15,27 @@ This guide will explain how to get ACE3 up and running faster than you can say b
 - Download [ACE3](https://github.com/acemod/ACE3/releases/latest).
 - Know how to extract .zip files. Use [Google](https://www.google.com) if not sure.
 
-## 3. Installation Guide
-- Extract both CBA and ACE3 into your Arma 3 folder. By default this is located in:<br>
+## 3. Install ACE3
+- Extract both CBA and ACE3 .zip files into your Arma 3 folder. By default this is located in:<br>
 32-Bit - `C:/Program Files/Steam/Steamapps/Common/Arma 3/`<br>
 64-Bit - `C:/Program Files (x86)/Steam/Steamapps/Common/Arma 3/`
 - After extraction you should have the `@ace` and `@CBA_A3` folders inside your Arma 3 folder.
+
+## 4. Launch Arma 3 with ACE3
 - Launch Arma 3 to start the official game Launcher.
 - Click `Mods` and make sure the checkboxes next to `ace` and `CBA_A3` are ticked.
 - Click `Play`
 
-## 4. Alternative launch methods
+## 5. Alternative launch methods
 
-### 4.1 Steam Launch Parameters
+### 5.1 Steam Launch Parameters
 - Not supported with the new Arma 3 Launcher
 
-### 4.2 Arma3Sync
+### 5.2 Arma3Sync
 - Inspect `Addon Options` and verify the `Addon Search Directories` are leading to your Arma 3 folder.
 - Return to the `Addons` tab and click `Refresh`.
-- Drag and drop `@ace` and `@CBA_A3` from `Available Addons` into the `Addon Groups` list and make sure the checkboxes are ticked.
+- Right-click inside `Addon Groups`, click `Create Group` and give it a name.
+- Drag and drop `@ace` and `@CBA_A3` from `Available Addons` into the new Group you created inside `Addon Groups` and make sure the checkboxes are ticked.
 - Click `Start Game`
 
-### 4.3 Play withSIX
+### 5.3 Play withSIX