To show the tab indicator arrow, you have to enable the Active Tab Indicator Arrow option from the Display Options.
1. Navigate to Smart Tabs → Click on Add New Tab Group.
2. Select any tab type you want from the Tabs Type option. Two options are available:
- Content
- Post

3. Under the Display Options, you will find the Active Tab Indicator Arrow option. Click on the Show button to enable it.

Note: To show this tab indicator, you should set the margin between tabs and description from the Margin Between Tabs and Description option below.
