Trigger script in drop down list to select a related table in a multiple portal layout
I have a layout with multiple portals, each portal only being one row. On the left of each portal/row I would like to have a drop down list to select an item, for example "Clutch", which once this is selected, the fields in that portal will be avaiable or linked to Clutch to input information about that "Clutch" item, for example "Total Running Hours" and "Running Hours since last oil change".
Can this be done? Since there are multiple portals on this layout, does each portal come from a seperate table occurance? Can someone please let me know how I can go about doing this? Thanks in advance.