You may select or multi-select arguments to be cut (press 

, or click the Cut
button) or copied press 

or click the Copy
button), then paste (press 

, or click the Paste
button) them onto a symbol with expansion. You can select either one or multiple inputs, outputs or parameters but not on a combination of those fields.
Alternatively, you can choose to “Copy Symbol Programming”, which will pick up ALL arguments on the symbol, and then “Paste Symbol Programming”.