Layout name	Image	Detail
Tab		Use tabs to separate portions of the canvas. Place object fields or other layout components in the tabs. Place up to 5 tab components on the layout with up to 12 layout components within the tab. ※Cannot be used on PDF pages

You can adjust the number of tabs after placing the element on the layout.
Click the button to add tabs and the button to remove them

When you remove a tab, all components and fields contained within will also be removed, and you will get a warning dialog like the following.

サポートされていないブラウザーです