pf2e.fyi
From Pathfinder #151: The Show Must Go On, which isn't enabled.

Bullying Staff

FEAT 4
UNCOMMONARCHETYPE
Archetype Staff Acrobat
Prerequisites Staff Acrobat Dedication
Requirements You are wielding your staff.

You can attempt to Shove or Trip creatures up to two sizes larger than you. If you have master proficiency with your staff, you can attempt to Shove or Trip creatures up to three sizes larger than you.

Pathfinder #151: The Show Must Go OnOGL