Method 1: Add directly in the Browser 

1. Open the browser and visit the Chrome Web Store.

2. Search for the plugin or extension you need (e.g., Helium 10).

3. Click on Helium 10 -> Click "Add to Chrome" -> Click "Add Extension".

4. Once the plugin is installed, its icon will appear in the top-right toolbar of the browser. You can also click the extensions icon "" to choose whether to pin it to the toolbar.

Method 2: Add via the Extension Center

1. Add Chrome Web Store Extensions/Plugins

(1) Open the Chrome Web Store in your local Chrome browser, locate the extension you want, and copy the URL of the extension's details page. (Take Grammarly for example)

(2) Go to the [Extension Center] -> Click Add Custom Extension -> Select From Chrome Store -> Paste the copied URL -> Click "Detect" -> Once recognized, click "Confirm" to add it successfully.

(3) After adding, you can find the extension under My Extensions. Click on Settings to configure the extension's usage range: enable it for all browsers or only for specific ones.

2. Add Local Extensions/Plugins

(1) Go to the [ExtensionCenter]-> Click Add Custom Extension -> Select From Local.

(2) In the pop-up dialog box, choose the folder path of the local extension.

(3) The system will automatically recognize the extension content. Once recognized, click "Confirm" to successfully add the extension.

(4) After adding, you can find the extension under My Extensions. Click on Settings to configure its usage range: enable it for all browsers or only for specific ones.