As an Office Manager, you will need to master following:

• cost management
• identify improvement actions
• implement corporate governance
• manage administrative systems
• manage office appliance requirements

More generally, an office manager is also versed in:

• analyse staff capacity
• create a work atmosphere of continuous improvement
• give instructions to staff
• manage needs for stationery items
• manage office facility systems
• manage staff
• office software
• perform clerical duties
• use different communication channels
• use office systems
• write work-related reports

It also helps to know the following:

• develop classification systems
• project management
• accounting techniques
• assess employees' capability levels
• communicate with customers
• contract law
• document sharing procedures
• financial capability
• labour legislation
• maintain contract administration
• manage accounts
• manage budgets
• plan shifts of employees
• prepare financial statements
• recruit employees
• revise drafts made by managers
• tax legislation
• trade union regulations
• train employees
• use customer relationship management software