You can use the following LINQ query to do that:
Add an Assign activity and add your first table on the left side.
On the right side write the following query:
(
From row in YourSecondTable
Select YoutFirstTable.Rows.Add({row(“Name”),row(“MO Name”),row(“First Occurence”)})
).CopyToDataTable
Please make sure, you add the columns in the correct order.
It means, you should have the columns in your first table in this order:
Name - MO Name - First Occurence
If the order is not the same, you have to change the following line:
row(“Name”),row(“MO Name”),row(“First Occurence”)