Specific configuration of Apache Tomcat for individual requirements is outside of the scope of this documentation however the following is a suggested (working) configuration process for a default install of Tomcat 9.0:
Enable SSL on your Tomcat connector
conf/server.xml, locate the connector with
SSLHostConfig, uncomment and edit as required. See also https://tomcat.apache.org/tomcat-9.0-doc/ssl-howto.html#Edit_the_Tomcat_Configuration_File
Add a 'Deploy to Tomcat' Deployment Task
In your Managed Certificate, under Deployment, add a new
Deploy to Tomcat deployment task, providing the destination path for your PFX file.
When the deployment task is next executed the certificate will be exported as a PFX file to this location.
Add a 'Stop, Start or Restart a Service..' Deployment Task
Then, add a task to Restart the Apache Tomcat service.
As certificate renewals happen as required (at any time), you may wish to set the Task Trigger to be Manual so that the service restart can happen either during a maintenance window or as a scheduled task.