Automation to add multiple records to a child table.

I would set up a helper table with a single record in it called automation focus. What a project is created or when the user pushes a button this record would be updated with the record ID of the parent project record and the number of weeks.  It will also need to be supplied with the start date of the project.

That would also be a table with say 200 records in it with record ID is numbered from 1 to 200. This table would receive the information from the automation focus record by one of the relationship and that's with no the record ID of the parent record and the number of weeks record.  This 200 record table would then have the calculations for the mile stone dates and would have a checkbox feel to say whether or not the particular date was needed. For example if the project was only five weeks then only the first five records would be  checkboxed.

Then the process would run a saved table to table copy and copy the check box records or the day before five or 73 of them across to be children of the focus project record.