I have asked to create security privileges for a ISV module in D365. In that I'm facing two issues in maintain privilege(access level set as delete)
1. Setup Form new,edit,delete buttons(system predefined) are grayed out.

I tried checking the code and properties and i tried adding the respective table to the permissions of security privilege and set the property as create but nothing seems to work. Am i missing anything? How to overcome this issue?
2.List page --> edit and a button group is missing for maintain privilege(access level set as delete) The list page form is shown below

After security privilege, the Edit button and in maintain tab,New button group is missing which is shown below

First i tried to set the menu item buttons needed permission as delete and tried to add it in the control of the list page menu item in the security privilege and access level as delete then i tried to add the form design in the form control permissions and assigned the buttons in the new control and set the access level as delete but nothing works. Any solution for this issue?