To Reorder Tools

In the Customize dialog ( File > Settings > Configuration > Customize ) , click the Tools tab.
Expand the User Tools section and expand the open DGN file.
Expand the toolbox containing the tool whose relative position you want to change.
Select the tool whose relative position you want to change.
Do one of the following:

To move up the tool one position, click the Move Up icon.

or
Right-click the tool and select Move Up from the pop-up menu.
Do one of the following:

To move down the tool one position, click the Move Down icon.

or
Right-click the tool and select Move Down from the pop-up menu.

Note: If the tool is the first item in the toolbox it cannot move up. If the tool is the last item in the toolbox it cannot move down.