Plz help with Header

Hi, sorry for the bad english. Who can help, I will be very grateful. I have a website http://sevlaw.ru/ and I want to add the button to the header, under the phone number 7978 ****. To do this, set up in the form of plug-in contact form 7, and then created a pop-up menu with the plug Popup Maker, which put in shape. Now I have turned the short code in the form [popupmaker-222] The problem is that I do not know how this code to insert a header.