Is your home all ready listed with an agent? If so, your question is a little late and should be presented to them prior to commiting to them and their company.
If you are currently considering listing your home, you would be well advised to request an in depth written comprehensive marketing plan for your specific home. This should include both agent and company initiatives. It would be reasonable to expect that a plan would include: a marketing budget, open houses, local advertising, internet advertising, services provided to customers, information about the company referral program, how buyers are attracted to them, knowledge of your particular market, etc.
A reasonable question to present any agent would be: How long will it take you to sell my home and for what price can you sell it?