We are in the testing stage of migration from FreshService to Jira Service management.
Account Recovery form can only be visible to Manila users only.
The software access form can only be visible to US users only.
When you say parent/child. Are you meaning for an example like a new hire request comes in to HR and you want that to spawn a child ticket for say, IT to complete the technical requirements and Facilities to set up their desk, access badge, etc.?
If it's somewhat similar to that use case, you could leverage automation that once a master request is raised, it can generate any necessary child requests which would be linked to the master request to create a parent/child relationship.