Dear Russell Pepple,
Thank you for reaching out to the Microsoft community. We are delighted to offer our assistance.
After carefully reviewing your description, we understand that you require GD&T symbols in Microsoft Excel. We regret to inform you that this feature is currently not available, as mentioned by Andreas in his response. We apologize for any inconvenience caused by this limitation.
We would like to recommend that you create a new thread in the Excel Community: Excel · Community (microsoft.com). Our Product Team oversees the site and actively monitors customers' comments and feedback. Many features have been developed and improved based on user input.
Thank you for your understanding and cooperation! Have a great day.
Sincerely,
Sean | Microsoft Community Moderator