Grid edit option when embedded in form

I have a grid and have added a link to an application to edit each record in the grid.

If I launch the grid on its own the edit icon is visible/clickable and the application that I have linked to will open in the same frame (see image edit_item_001.jpg)

However, when I embed the grid into a form the edit icon is no longer available (See image edit_item_002.jpg)

Am I missing a step here? Is it possible to retain this functionality on a grid when embedded in to a form?

Many Thanks

edit_item_001.jpg

edit_item_002.jpg