Assigns class, drawing, and project properties to a new annotation style based on an existing annotation style or modifies an existing annotation style.
Ribbon: Click Home tab
Project panel
Project Manager
Project Setup
Plant 3D DWG Settings
Plant 3D Class Definitions node
Right-click a project icon
Click Properties.
Command entry:
projectsetup 
Displays the names of the available annotation styles for the selected model object.
Displays the Symbol Settings dialog box, where you can add an annotation style.
Displays the Symbol Settings dialog box, where you can modify an annotation style’s settings.
Deletes an annotation style.
Displays the AutoCAD Block Editor, where you can edit the annotation behavior.