The correspondence between the IADLs and the services offered by Villages are obvious.
The software lets you define categories of services and then name specific services within each category. While all Villages will perform pretty much the same services, the names and categories assigned will differ greatly. Generally speaking, a Village can have a large number of narrowly defined services, or a smaller number of broadly defined services. The choice of approach you use is up to you. When trying to find a volunteer to fill a specific member request, narrowly defined services may increase the chance that a person contacted will be interested in he service. But this approach results in few potential volunteers for each service because a person may not feel they are qualified a particular service. The prime example is changing a light bulb which would be classified as a handyman service but many volunteers don't see themselves as handmen.
Broadly or Narrowly Defined Services
This entire issue is unimportant when volunteers are found using the Volunteer Self-Service online listing. In this case, volunteers see the description of each request and can select for themselves which service they wish to do regardless of which services they has signed up to do. If you use the Open Service Request email blast each volunteer sees only the services they have selected. This argues for very broad definitions of services.