[TYPO3-UG UK] Hide buttons of New Page and New Content

[Francisco]

Hello:
I have configured one user that only can add new records in one section of 
one page.
When the user goes to add new records the following buttons are displayed:

New Content
New Page

If he uses them he can't execute his functionally because of permissions.
I wonder if there is any way to hide these buttons.
Anyone know how?

Thanks in advance.

Frank