These parameters appear to be locked down to 2 users. See this knowledgebase article on how to gain access:

https://kb.sage.com/selfservice/viewdocument.do?noCount=true&externalId=115027

Be careful on which user you give access to modify these parameters (maybe even change it back afterwards to keep it locked down).

Hi Maciej Lipk, if this suggested answer helped, please mark it as verified  (by clicking the "Verify Answer" button next to Reply, on the response) for the benefit of others in this forum . Thank you!