We are exploring the use of Dynamics as a CRM and sales management tool for our construction technology startup. We want the ability to segment our accounts based on the type of customer they are - i.e. General Contractor, Specialty Contractor, Owner/Developer, etc. Is there a field that can easily be customized so that we can predefine a list of drop down options for this field? If so, how do I access, define and activate this field so that is visible at the account level in the Customer Engagement platform?