Is there a way to select existing items and associate them to an account record all in one list? I have it set up as 2 items right now - a list on the top half showing opportunities and a basic form with subgrid below the list where the user can select the opportunities. This works, but it's been requested for me to combine the two into one - so something like the list, but with checkboxes to select instead. Is this possible out of the box? Here is what I have:
