A Dynamic Evidence Type is the administrative equivalent to an Non-Dynamic Evidence Type - a logical grouping of related attributes about which an organization wants to record information in respect of a Case (e.g. Income Evidence, Medical Expense Evidence, Residency Evidence, etc.).
For the purposes of example, let's say that we have an Evidence Type called 'Sample Income' that we want to define, and it consists of two attributes: Income Amount (a money value), and Income Type (a dropdown containing different types of income)
To begin creating this as a Dynamic Evidence Type, perform the following actions:
Evidence Type: Sample Income
Logical Name: SampleIncome
Effective From: 1/1/2011
Security Group: SAMPLE_INCOME_GROUP
This will create the overall structure of our 'Sample Income' Dynamic Evidence Type. Next, this Dynamic Evidence Type will be fleshed out in a bit more detail.