Hello,
Unfortunately there is no option to do this. But youcan try to show and hide it using custom CSS
Go to Theme options > Styling > Custom CSS and add the following code
.single-product .tab-additional_information {display: block !important;}
.single-product .tabs .accordion-title a:after {display: none !important;}
.single-product .tabs .tab-title.opened {color: #1e1e1e;}
.single-product .tab-title .btn-underline:after {background: none;}
.single-product .sku_wrapper {display: none !important;}
Regards