There is a User Defined TVG in the SBP Editor and a customer suggested to add such tool into SSTM as well
https://hypack.atlassian.net/jira/servicedesk/projects/SUP/queues/custom/32/SUP-2480
https://hypack.atlassian.net/jira/servicedesk/projects/SUP/queues/custom/32/SUP-2480