title: How to select multiple ranges for a parameter WITHOUT first filling all other required parameters?
body: <p><img src="https://i.stack.imgur.com/35slx.png" alt="The picture"></p>
  
  <p>I'd want to be able to have multiple range selections for "Sales order no."</p>
  
  <p>Problem is: when i press the button marked with green, i get the error "Fill in all required entry fields".</p>
  
  <p>I put my main processing block at the START-OF-SELECTION event.</p>
  
  <p>What to do to not have this happen? It seems to me that i should be able to add multiple selections without all the hassle of first filling every other mandatory field.</p>