You are ready to add appropriate keyword/value pairs to your posts or pages.
Scroll down the editor page to the bottom of your post text. Just below the text area and prior to the SEO All-in-One area, you'll find the Custom Fields area (see pointer 1 below).
To enter a custom field keyword for the first time, do the following:
A. Click on the "Enter New" link (pointer 2 in previous image).
B. Enter the keyword you want to use, such as "adsense-top," and an associated value, such as "no, into the Name and Value fields " (pointer 1 below).
C. Click on the “Add Custom Field” button (pointer 2 below) to load the keyword/value.
D. Repeat steps A-C to add all the keywords and values you need to control the placement of ads on this page or post.
To utilize a previously-entered keyword:
Once you have entered a custom field keyword, it is available on any post or page. To re-use a keyword on a different post or page, edit that item, scroll down to the Custom Fields area in the Editor, and perform the following steps:
A. Select the keyword from the “Name” drop-down menu (pointer 1 below).
B. Type in the desired value for that keyword.
C. Click the “Add Custom Field” button (pointer 2 below).
Any help please.