What is your role in BigFix? Are you a Master Operator (maybe the only operator?), or is BigFix providing other services besides ILMT?
In general, you want to take action on the Install or Upgrade Scanner task every time you add new computers to be monitored by ILMT. After that, the other actions (which are open-ended by design) will all be executed by the computers with the scanner in their proper order.
Remember that when a Content update or Application update is provided by IBM, you will see new version numbers on these various tasks and Fixlets. You may need to stop existing actions and replace them with the new versions. You will also need to take action on the Software Catalog Update task when it is applicable to your ILMT server, and take action on the Upgrade to the latest version of IBM License Metric Tool Fixlet when it is applicable to your ILMT server.
I recommend that you take time to read through the ILMT documentation. In particular, to answer your current questions, see this section: Manual Scan Configuration .