This is an independent user-to-user support forum. It is a weekend. Give other volunteers time.
I do not recognize the term "Quick Start menu," but you may be talking about the Quick Access Toolbar (QAT).
Have you tried the Insert a Caption feature on the References Tab?
Textboxes can be saved for reuse and easy insertion in the Textboxes Gallery. This is saving as a Building Block.
Running a repair may not help but won't hurt and does not take all that long.