What is Occupy ?
Occupy is (verb) 1. to live in or work in They occupy the flat on the first floor. The firm occupies offices in the centre of town. 2. to be busy with Dealing with the office occupies most of my time. to occupy yourself with to be busy with How does he occupy himself now he is retired? 3. to take control of a place by being inside it Protesters occupied the TV station. 4. to hold a post Who occupies the post of company secretary.
source: Easier English, Student Dictionary Upper Intermediate Level