For many assests in KarmaCRM, you often see such as the list of companies, cases, deals, tasks, and contacts. On these pages, you can see the sidebar on the right side. You have an option to hide this sidebar. This option enables you to increase the width of the list view. For example, if you need to see many columns in a list and the list looks crowded or cluterred, you can hide the sidebar to see the list view more clearly.
When you see the sidebar, you can see the button to hide the sidebar. Click on Hide Sidebar button available at top right side of the page. Now, the sidebar is not available as below.
The Hide Sidebar button is changed to Show Sidebar button. Click on Show Sidebar button to see the sidebar again as below.