To Add Default Location Codes

Click Project tabProject Tools panelManager. Find
In the Project Manager, right-click the project name, and select Properties.
In the Project Properties Components dialog box, Component TAG Options section, select Upon insert: automatic fill Installation/Location with drawing default or last used. Click OK.
Open the drawing to set the default location value for.
Click Schematic tabOther Tools panelDrawing Properties drop-downDrawing Properties. Find
In the Drawing Properties Drawing Settings dialog box, IEC - Style Designators section, enter a default Location value. Click OK.
Tip: You can click Drawing or Project to select a Location value that was already in either the active drawing or project.

The next time you insert a new component on this drawing, the Location code is prefilled with the drawing default.