A sample setting for a kernel pool is shown below. This shows that the URLPattern will use this pool for any URL that has Compute after the web application base. For example, the url http://webMathematica/Compute/special/tool.jsp will use this kernel pool.
<KernelPool>
<KernelPoolName>General</KernelPoolName>
<URLPattern>/Compute</URLPattern>
<KernelNumber>2</KernelNumber>
</KernelPool>