The header? Just use the same theme, it’ll do that for you.
There will be different themes. One for the “blog father” and to another for the “blog children”. = /
The “blog children” will have two headers. That I want When a change is made in the header “blog father”, the same change Also Appear in the header of the “blog children”.
That depends on how you code the main site theme and the sub-site theme.
If you hardcode the image into the sub-site’s theme, then if you change that image file, it’ll update anything that calls that image.
I want to display the image and menus and banner advertising “blog father” in “blog son.”
You can make your themes on your network do anything you want.
If an ad for Blog Father (aka your main site) is what you want, then hard-code it into your theme’s header for the blog son (aka sub-site).
Dude, I want the WHOLE header is the same in both. When a link is added to the menu “blog father”, want the same blog son, automatically.
Okay, you keep slightly tweaking what you’re saying. Saying you want the menu items on the children sites to be inherited from the main site is not the same as saying you want to ‘display the header.’
Are you trying to say: “I want the menu I use on my main site to be the menu for all my children sites.”
I’m trying here, man, but you’ve not given me a lot to go on. I know it makes sense to you, but you’re using non-standard terms, and I’m trying to convert them and figure out what you mean. You have to remember we’re coming from different ends. 🙂 It takes a while sometimes to figure out what everyone means, and text is a real shoddy way to do that.
There’s a thing called ‘Network Wide Menu’ – http://wpmututorials.com/plugins/networkwide-menu/
I hope that’s what you want. I honestly have no idea what you mean by ‘two headers.’