Software: Word (Office)
User query: Insert a numeric page number at the top right. Style is plain number 1.
Difficulty: hard
Ground-truth plan:
Task 1: Insert a numeric page number at the top right. 
Subtask 1: Navigate to the Insert tab in the Word ribbon.
Subtask 2: Click the Page Number command within the Header & Footer group.
Subtask 3: Hover over the 'Top of Page' option.
Subtask 4: First move the mouse horizontally then move it downward to the 'Plain Number 3' and then Click it to place the page number at the top right of the page.
Subtask 5: Close the header by clicking the 'Close Header and Footer' button or by pressing Escape on your keyboard.