In the Insert Component: JIC Schematic Symbols dialog box, click Push Buttons.
In the JIC: Push Buttons dialog box, click Mushroom Head NC.
Respond to the prompts as follows:
Specify insertion point:
Position the push button on the middle of the wire at line reference 403 and click (3)
In the Insert/Edit Component dialog box, verify:
Component Tag: PB403A
AutoCAD Electrical toolset automatically assigned the tag name based on the line reference. It added the “A” suffix since it is your second push button on this line reference.
In the Descriptions section, specify:
Line 1: EMERGENCY STOP
In the Location code section, click Drawing.
In the All Locations - Drawing dialog box, select OPSTA3 and click OK.
In the Insert/Edit Component dialog box, click OK.