Hi,
If you put 1 and 1 in them, it won't do anything.
The "start" is the position of the element after which the process will run.
The "value" is the number of elements it will process.
So suppose that you have 2000 products after the filters, and that you configured 0 and 500 (like by default), the actions will run for the first 500 products. To process the actions for the next 500 products, you'll have to change the limitations to 500 and 500, then, 1000 and 500 and finally 1500 and 500.
Or you could do it once with 0 and 2000, but then your server might not have resources restrictions high enough for the processing and it might crash.
The limitations allows for processing large amounts of elements in smaller chuncks.
PS: Thank you. We've fixed that.