To pin tabs in the Island Browser, you can follow these steps:

1. Open Island on your computer.

2. Navigate to the webpage you want to pin as a tab.

3. Right-click on the tab you want to pin. A context menu will appear.

4. From the context menu, select "Pin Tab." Alternatively, you can also use the keyboard shortcut by right-clicking and pressing "P" on your keyboard.

5. The tab will now be pinned to the left side of your tab bar, represented by a smaller tab size.

6. Repeat the process for any additional tabs you want to pin.

Pinning tabs is a useful feature as it keeps your frequently used tabs organized and easily accessible. Pinned tabs will remain open even if you close and reopen your browser, making them convenient for websites you visit regularly.