This functionality is supported only if you are using the Classic Agent.
Using the Basic workflow, Silk Test Classic can automatically enable extensions for many different development environments. If you would rather enable the extension manually, or the basic workflow does not support your configuration, follow the steps described in this topic.
A host machine is the system that runs the Silk Test Classic software process, in which you develop, edit, compile, run, and debug 4Test scripts and test plans.
There is overhead to having more than one browser extension enabled, so you should enable only one browser extension unless you are actually testing more than one browser in an automated session.