Hi @Rising Flight ,
Based on your description, I want to confirm that you want to create a transport rule to forward the email from soft@somedomain.com to your manager for tracking purpose.
And it seems that you are confused about the options of the subject or body as below shows.
You can refer to below to compare their differences:
subject or body includes any of these words
Messages that have the specified words in the Subject field or message body.
subject or body matches these text patterns
Messages where the Subject field or message body contains text patterns that match the specified regular expressions.
subject includes any of these words
Messages that have the specified words in the Subject field.
subject matches these text patterns
Messages where the Subject field contains text patterns that match the specified regular expressions.
Therefore, you could put the 'your license has been placed' you mentioned above into the subject or body includes any of these words option to meet the mail flow you want.
For more information, you could refer to Message subject or body of Mail flow rule conditions and exceptions (predicates) in Exchange Online | Microsoft Learn.