You can learn more about how actors are used in Assisted Selling by examining the registry which configures and enables all of the actors used by the apps.
Assisted Selling actors are registered here:
/atg/rest/registry/ActorChainRestRegistry
There is a properties file for this in Store.Mobile.DCS-CSR
for the Assisted Selling app and one in Store.Mobile.REST
module for CRS-IUA.
A wealth of information about actors in your environment is available through the Dynamo Server Admin browser view. Start by viewing the filtering configuration, which determines which properties output for each component or repository item by using this URL, modified for your domain and configuration:
http://servername:serverport/dyn/admin/nucleus/atg/dynamo/service/filter/bean/XmlFilterService/

Dynamo Server Admin browser view
Use this URL to view a list of registered actors:
http://servername
:serverport
/dyn/admin/nucleus/atg/rest/registry/ActorChainRestRegistry/?propertyName=registeredUrls
The list of registered actors is shown in the following illustration.

Dynamo Server Admin browser view – components
Then you can view a particular actor to see the available chains:
http://servername
:serverport
/dyn/admin/nucleus/atg/userprofiling/ProfileActor/
The browser view of actors and available views is shown in the following illustration.

Dynamo Server Admin browser view – Actor Chains
For example, for products:
http://servername:serverport/dyn/admin/nucleus/atg/commerce/catalog/ProductCatalogActor/?chainId=getProduct
The browser view of product actor catalog is shown in the following illustration.

Dynamo Server Admin browser view – Actor Catalog