In order to do so:
- Place the cursor above it
- Use the blue 'i' icon and select "Insert configured Check".
Then we pick the preconfigured Check (or we could use "Insert base Check..." to create one).
We then assign this new structure to a variable, e.g. "applyToCheck":
Then we scroll down to the Fixup structure and replace "Page 1" with the name of this variable.
And then the Fixup can be used.
Of course the above makes more sense if the structure is created dynamically.