What determines when the "add row" button is available in expanded row view?

[M_Schneider]

Hi @Hunter_Ashmore1 ,

Is Open Tasks a cross-doc table? Apparently, you can’t select rows if a synced lookup table is displayed as a table in a detail view.

Ability to choose / remove items from lookup of cross-doc table when in Detail > Lookup-as-table view

In a normal table view, I’m able to choose and remove items for my lookup column. In row’s table view where a lookup column is also shown as a table, I’m also typically able to choose and remove items (e.g. “Choose Row” and delete). But if the lookup column is referencing a Cross-doc table, the ability to choose or remove items in the table view doesn’t exist. I understand the limitation of not being able to add rows ("+") to a cross-doc table lookup, but I should still be able to choose and…

One possible workaround is to toggle off table view and use dropdown or list to select rows. Then add a formula column that simply displays “open tasks” and toggle on table view in this one.