inserting a second Datasheet

[Bentley]

I am working in a form and I would like to add a second datasheet to the view. I have done this with the other forms I have, but for some reason access will not insert fields from one table into a form as a datasheet. instead they are inserted in as text boxes. I have the table set up with the proper relationships as per the other tables, but cannot figure out why access wont let me insert this table as a datasheet. Any suggestions?

[Micron]

What view is the first form? You cannot add a data sheet to a data sheet AFAIK. You can add a subform with data sheet view to a form with a single form view though.