The phrase "to open the office" means to start or begin the workday at the office. It refers to the process of unlocking doors, turning on lights, and getting everything ready for business. Full definition
I first opened my office in an executive suit, thinking there would be networking and other opportunities. (lawyer-monthly.com)
In our search for an intuitive check - in we have spoken with many people working in open office spaces, facility managers, owners of buildings and furniture manufactures. (makezens.com)
Setting up your website and optimizing for mobile users is a bit like opening an office on the avenue, unlocking the door, and hanging an «open» sign in the window. (lawseo.uk)