I am using Joomla 3.4.3 and I am trying to give permissions to a specific group. I want this group to Create/Edit/Delete articles in a specific category.
I have created a group under Registered users. Then in System -> Global Configuration -> Permissions I am giving the permission of Admin Login, Access Administration Interface, etc.
Take a look at here:

When I login as a user from this group in the upper menu I can only see the SP Page Builder option.
Take a look at here:

How can I enable the Content menu in order to have access (Create/Edit/Delete) to the Categories and Articles?
I don't want to give Manager permissions because I want to give the less the permission I can.
Under
Global Configurations > Permissionson the left hand side you will see all the components. You have to go to each one and enable or disable them accordingly, this will show the user the relevant menu's on the top.