After you’ve set up an object build, you can easily copy it and paste it onto another object, so that the two objects behave the same way. Or you can remove an object build using the Build inspector.
Select the object on which you’ve already set up the build as you want it.
Choose Format > Copy Animation.
Select the second object and choose Format > Paste Animation.
In the Build inspector, click More Options to open the Build Order drawer. In the Build Order drawer, select the build you want to delete and press Delete.
Select the item for which you want to remove the build effect, and then choose None from the Effect pop-up menu in the Build inspector.