This article described how to Grant Access to a form and View current form security objects with SECURITY DIAGNOSTICS TOOL : https://community.dynamics.com/365/financeandoperations/b/howtodynamics365/posts/how-to-view-security-diagnostics-for-page-in-dynamics-365
AX – D365FO – Grant Access to a form and View current form security objects with SECURITY DIAGNOSTICS TOOL
AX / Dynamics 365 For Finance and Operations blog 