On desktop Obsidian has two sidebars on both left and right. The left sidebar includes the [[Ribbon]].
On mobile, Obsidian only has a left sidebar, which is [[#Open hidden sidebars|collapsed by default]].
## Open hidden sidebars
If a sidebar is collapsed, you can open it by clicking the left expand ( ![[obsidian-side-bar-left.svg#icon]] ) or right expand ( ![[obsidian-side-bar-right.svg#icon]] ) to reveal it.
By default, plugins will only create new tabs instead of new [[#Tab groups]].
You can switch between tabs by clicking on the icon. A tooltip will also appear to help you identify tabs.
In each pane, you can only see one tab at any given moment. Some actions will automatically bring a tab into view, for example when you click on a tag.
### Close tabs
Some tabs can be closed via the right click menu, but some can't. If you don’t want to see a tab that can't be closed, consider disabling the relevant plugin or collapsing the sidebar by clicking on the Arrow icon.
### Rearrange tabs
You can drag and drop the tab icons to rearrange them within a group of tabs.
## Tab groups
You can have multiple tab groups in the sidebar.
### Create tab groups
To get a new tab group, drag the icon of a tab above or below a current tab group. The highlighted area will indicate where the new tab group will be created.
### Close tab groups
To close a tab group, you can [[#Close tabs|close all tabs in it]], or drag all tabs in it by their icons and drop them into existing tab groups.
When only the tab area of a tab group is highlighted, the tab being dragged will be dropped into that tab group to merge with other tabs in that group.