You can use the "Page protection" feature, to create an exclusive access to the page. Click on the "wheel" icon in the right side of the editor, and select the security panel pages. Before selecting the page and protecting it (by clicking on the "padlock" icon), create a group and add the users you want to group. When protecthing the page, you will be asked to associate a group to the protected page. All users included in the group will have the access to the protected page by entering the credentials set.