Step 1 :  Go to the particular space.

Step 2 :  Go to space tools then select workflows

Step 3 :  Click on Global workflows 

Step 4 : You will get various workflow list in global workflow option, Select the particular space workflow for which you want to disable workflow for particular pages.

Step 5 : Click on View option and select " Edit with markup " option from the drop down.

Step 6 :  After that add the below highlighted condition for the "noworkflow" label in the markup workflow

Step 7 : After that Click on "Save" for saving all the changes.

Step 8 : Once it is saved, There will be a "noworkflow" tag near to that particular space

Step 9 : After that go to the particular page on the space where you need to disable workflow and add "noworkflow" tag 

Once the tag is added workflow will be disabled for the particular page.

Reference ticket : https://sbs-support.solvay.com/a/tickets/4003710