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From the sidebar, select Spaces.
Select the space.
On the space details screen, select the Input counter or Output counter to view the inputs or outputs currently assigned to this space.
On the Inputs or Outputs screen, select next to the input(s) or output(s) to be removed.
Select Save to save the changes. If you exit this screen after the inputs or outputs are removed without saving, you will be prompted to save or discard your changes.

Remove Inputs and Outputs from a Space