Developing Extended Function to start batch orders and create journals

Hello all,

We are planning to create an extension function that imports data from uploaded file and implement these features:
1. Start batch order (change batch order's status to "Started") and create picking list journal and route card journal
2. Create picking list journal
3. Report batch order as finished (change batch order's status to "Finished") and create report as finished journal
4. Create report as finished journal

For all of the above 4 features, the extended function should have the same results as that of standard D365 FO forms.
(Forms that can be accessed from all production orders)
We have learned that ProdJournalCreate class and ProdJournalCheckPost class are used in the forms.
What we want to know is if there is any other classes that needs to be used to obtain the same results as using standard forms.

Thanks and regards,

Satoko
We are planning to create an extension function that imports data from uploaded file and implement these features: