Hi @Anonymous,
Actually, you still need to use the Dataflow to finish part of things.
Assuming you have a Department as the LookUp field in your SP list.
For Lookup field with single value, make sure to pick the field containing the ID as string in this scenario departmentid and not the field that returns data type as table (Departments), you will need this later to properly setup One-Many relationship between tables in Dataverse
If you don't have Dataverse table, well, under load setting selected Load to new table, and specify new table name. of course if you had created the tables previously you can select Load to existing table.
All of the above info is mentioned in the blog I attached in my previous reply.