Place your cursor on page 1 of your document. Double click in the header section of your document to open the Header & Footer Tools menu. On the Options pane, select Different First Page.
Step 2: Insert Page Number
Select Page Number from the Header & Footer pane, and select Top of Page >> Plain Number 3.
Step 3: Insert Running Head on First Page
Place your cursor next to the page number 1. Type the words Running head: followed by the title of your paper in capital letters.
Step 4: Position Running Head on Left Margin
Hit the Tab key twice to move the running head to the left margin.
Step 5: Insert APA Headers and Page Numbers for Remaining Pages
Place your cursor on page 2 of your document. Double click in the header section to open the Header and Footer Tools menu. Repeat steps 2-4. Omit the words Running head: