To Set the Current Annotation Scale for Annotative Objects
Model Space
On the status bar, click Quick View Layouts.
Click the Model thumbnail.
On the status bar, click the Annotation Scale drop-down list and select the scale to set current.
Layout Viewport
On the status bar, click Quick View Layouts.
Click the thumbnail of the layout to set current.
Select a viewport.
Right-click in the drawing area and choose Properties.
On the Properties window, select the Annotative Scale property and select the scale to set current.
Related Concepts
About Annotation Scale
About Annotative Objects and Styles
About Annotative Objects Workflow