The administrative staff is responsible for managing the day-to-day operations of the office. They perform tasks such as answering phones, managing email correspondence, scheduling appointments, processing invoices, and filing paperwork. They are also responsible for organizing and maintaining company records, such as employee files and financial records.

The engineer is responsible for designing, installing, and maintaining security surveillance systems. They are responsible for analyzing client needs, designing systems that meet those needs, and overseeing the installation and maintenance of those systems. They also provide technical support to clients and troubleshoot any issues that arise with the systems.

The accountant is responsible for managing the financial aspects of the business. They prepare financial statements, manage accounts payable and receivable, monitor cash flow, and ensure that all financial records are accurate and up-to-date. They also manage payroll, tax filings, and compliance with financial regulations.

The sales team is responsible for generating new business and maintaining relationships with existing clients. They identify potential clients, develop sales strategies, and prepare proposals for security surveillance systems. They also negotiate contracts with clients and work with the engineering team to ensure that the proposed systems meet the client's needs.