Okay, update. I've solved one issue, but realized I'm still dealing with another. (unresolved issue at the bottom)
I've managed to get what I was looking for via trial and error in regards to my form/subforms. All I had to do was set the text/combo boxes "OnChange" event to run vba code that would update the other related fields with the value they were given. In case anyone else is looking for this in the future, here's how I did this:
Right click the object (in my case it was the "scenarioID" text box), click properties, go to the event tab, click where it says "OnChange", build event, code builder. The following is an example of how to code this:
Code:
Private Sub textbox1name_Change()
Dim Val As String
Val = Me.textbox1name.Value
Me.subform1name!textbox2name = Val
Me.subform1name!textbox3name = Val
End Sub
textbox1name is the original textbox that your changing the properties of, textbox2name and textbox3name are the ones you want to be the same as textbox1name.
If the objects you're trying to change are in the main form, and not a subform, then use:
Code:
Me.textbox2name.Value = Val
Hope that helps someone.
However, I just realized that while I can enter new records with the form/subforms, I'm still unable to change which record I'm looking at when data entry is set to "NO". I can only view the first record, and clicking on other options doesn't do anything. Would changing the sources from tables to queries be the answer to this, or is there something else going on?