Main toolbar > Curve Editor (Open) > Global Tracks > Block Control > Master Block > Right-click the Master Block track in
the Track View Controller window. > Master Block Parameters dialog
Graph Editors > Track View – Curve Editor > Global Tracks > Block Control > Master Block > Right-click the Master Block track
in the Track View Controller window. > Master Block Parameters dialog
After assigning a Master Block, right-click the Master Block track to display the Master Block Parameters dialog. This is the first step in creating a block.

Add—Displays the Track View Pick dialog. In the Track View Pick dialog, select tracks to include in a Block. Valid tracks are displayed in darker text.
Add Selected—Creates a block using the tracks already selected in the Track View hierarchy. Any invalid tracks are ignored.
Select the tracks (include the Master Block track), and then right-click Master Block in the Track View hierarchy.
Replace—Replaces the currently selected block.
Remove—Remove the selected block from the list.
Load—Loads a block from disk. Displays the Attach Controls dialog.
Map incoming tracks to tracks in your scene using controls in the Attach Controls dialog.