To Attach Notes and Files to an AEC Polygon Style

Click Manage tab Style & Display panel Style Manager .
In the Style Manager, expand Multi-Purpose Objects AEC Polygon Styles and select the style you want to edit.
Note: Alternatively, you can select an AEC polygon in the drawing, and click AEC Polygon ribbon contextual tab General panel Edit Style drop-down AEC Polygon Styles.
On the General tab, Description box, enter a description to the AEC polygon.
Click Notes.
In the Notes dialog box, Notes tab, and add or edit the note.

On the Reference Docs tab,

If you want to…	Then…
attach a reference file	click Add, select a file, and click open. Click OK.
edit the description of a reference file	select the file, and click Edit. Edit the description, and click OK.
change the reference file	double-click the reference file to start its application. Close the application when you are finished editing.
detach a reference file	select the file name, and click Delete.