I have a Main form called "New Order" and a subform called "Material Order" field name is also called Material Order (Link name SUB_Material_Order).
Material Order Main Form has following:
Type - Which is autopopulated in deluge so users know what "Type of Material to put in that Line.
Manufacturer - Lookup field of "Add_Manufacturer"
Brand - Lookup field of "Add_Product" field Brand
The rest of fields are auto populated based on Brand choice Lookup field

I have the subform (Material order) already have 8 Line items with the Populated Type inputed in.
But, I would also like it to default the Brand choice with our popular orders and our users can change when necessary.
Example below of what it pops up

And what I would like to have when opening form

I'm also having issues with the total amount. The total Amount for each line doesn't show but also doesn't calculate the sub total correctly. Above photo give sub total of 408 but should be $1971.06

I'm not sure what i'm doing wrong with this portion at all. Hoping y'all can help. Thank you.