https://docs.rws.com/en-US/trados-enterprise-%26-accelerate-791595/using-smart-actions-995155

To add a term to a termbase, select the term that you want to add, and then select Add term . In the quick add dialog box, choose the termbase where you want to add the term and whether or not you want to create the term based on an existing entry template. Then, select the rectangle next to the other language  and select the equivalent of the term in the other language. Finally, select Add term to add the term directly or Add and edit term to edit fields related to that term after adding it to the termbase.

https://docs.rws.com/en-US/trados-enterprise-%26-accelerate-791595/using-smart-actions-995155

To add a term to a termbase, select the term that you want to add, and then select Add term . In the quick add dialog box, choose the termbase where you want to add the term and whether or not you want to create the term based on an existing entry template. Then, select the rectangle next to the other language  and select the equivalent of the term in the other language. Finally, select Add term to add the term directly or Add and edit term to edit fields related to that term after adding it to the termbase.

Are there specific permissions needed to be able to do this? I am not seeing the icon to add term in the smart actions menu.