Quickly change the layout of the Effects tab using Layouts you create.

The Layouts drop-down box
To switch layout, do one of the following:
The keyboard shortcut of a Layout is displayed in the Layouts drop-down box.
To assign one of 10 keyboard shortcuts to a Layout:
Once created, the keyboard shortcut appears next to the Layout in the Layouts menu.
To create a new Layout:
The next time you select the Layout from the Layouts menu, settings with a checkmark are restored. Settings without a checkmark do not change.
The following elements of the Effects tab can be managed with a Layout:
To rename, delete, or reorder Layouts:
You can also use the Manage Layouts window to change keyboard shortcut assignments.
Let's consider the case where you set up a layout with two viewports: one with Scopes and the other with the result view. As you scrub the time-bar, you see both views update as expected. Figuring that this is a good layout, you create a new Layout out of it (and name it Scopes_Result).
You go on working, change Layout and then switch back to Scopes_Result. But now, as you scrub the time-bar, only the selected view updates, even if All Viewports. No matter what setting you set, you can't get both viewports to update at the same time after creating the Scopes_Result Layout.
What happened? The Compare_Previous_Next_Shots Layout sets the positioners to Prev | Cursor | Next. As the Scopes_Result Layout doesn't set it, and because there are now only two viewports instead of three, the default is to set the positioners to All Free. Hence the lack of sync. Saving the Positioners state makes sure the right option is used for you layout.
How to make sure positioners are in sync across viewports: