To Set the Active Level Using the Level Manager Dialog

Do one of the following:

Select Drawing > Home > Primary .

or
Click the Active Level field on the status bar.

The Level Manager dialog opens.
Do one of the following:

Double-click the level you want to make the active level.

or
Right-click the level you want to make the active level, and select Set Active from the pop-up menu.

The selected level appears as the active level in the Level menu in the Attributes toolbox.