To Specify the Pre-Selection Filter (AutoCAD Mechanical Toolset)

Click Content tabLibrary panelContent Manager. Find
In the Content Manager dialog box, in the Content panel, right-click the item to add the size to and click Edit. The Content Editor starts.
If the Family Table is not displayed
- Click Content Editor tabManage panel Family Table. .
Locate the row that you want to change the pre-selection filter of.
In the PAST column, select the pre-selection filter from the drop-down list.
Close the Content Editor.
Click Save when you are prompted to save the content.