The Leader Hotkeys plugin introduces a leader key functionality to Obsidian, enabling users to assign hotkeys that require an initial leader key press before executing a command. This feature is inspired by similar mechanisms in tools like Vim and tmux. Users can configure any key combination as a leader key and create shortcuts for focusing panes or performing other actions, including those from third-party plugins. The plugin provides a streamlined way to navigate and execute commands within Obsidian, offering enhanced customization and efficiency.