Put in the create actor event of your canvas actor -> script editor ->
CreateActor("Actor1", "actor1animation", "(none)", "(none)", 245, -155, false);
CreateActor("Actor2", "actor2animation", "(none)", "(none)", 114, 16, false);
CreateActor("Actor3", "actor3animation", "(none)", "(none)", 200, 16, false);
etc etc
Then just create the canvas actor when needed.
For example you want to load the canvas actor when the player collide with target:
player -> collision any side of target -> create actor -> canvas
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