The phrase "pressing motion" refers to the act of applying force or pressure in a continuous and controlled manner while moving something, usually with the hands or fingers. Full definition
Apply a small amount with a gentle pressing motion all over face lips and eyes with cotton wool and then brush off excess to polish the skin and avoid a heavily powdered look. (style-yourself-confident.com)
That'll change from person to person, but in general wide keys, spread - out keys, with a deep pressing motion will do you best. (businessinsider.com)
Add all ingredients into a small mixing bowl and then mix together thoroughly using the back of a spoon and a downward pressing motion. (trinityskitchen.com)