There actually isn't a easy way to do this. 😞
While you could move the Print button outside of the component that you have all the Check All buttons in, and apply the Fix Position. That would only solve the visual issue. By doing so, you lose the only easy method to communicate the states between those Check All buttons and that Print All button.
The need for some simple communication between components becomes apparent.
My suggestion would be to ask yourself what did I need to demonstrate/prototype to my stakeholders? Do I need to demonstrate the linkage? or do I need to demonstrate that that the Print All button is fixed? You may need to have two samples that are shown to them to highlight this functionality.
I am sure there is an open issue on the UserVoice site that you can up vote.