Permission only to edit components on page not add/remove components or page

Hi,

I have the following requirement:

* I only have access to _sites/project_ folder in production

* I only have access to *edit mode* to edit existing components on a page.

* I have the ability to edit a page's properties.

* I cannot add or remove any components from a page.

* I cannot publish a page.

* I cannot create, duplicate or delete any pages.

Is it possible to achieve this functionality using permissions?

I have read and modify permissions right now but that is not letting me edit a component available on page. When I add create permission its enabling the edit component functionality at the same time its letting me add a new page which is against my requirement.

Thanks,

Neethu