Calc modify toolbar with operator "SUM"

I have tried to follow the answer given to the question “6.3.1.2 Sum function in formula bar now activates a drop down menu” (12 sept 2019) but i was not able to find the operator “SUM” (sigma in greek alphabet). I was in Tool>Customize but i did not find it.
Can you help me?

Hello,

prerequesite: View > [x} Formular Bar is activated.

image description

Hope that helps.

Update [according to comment of OP]
To add the SUM function into a toolbar, you need to customize a toolbar. To do so, perform

  • Tools -> Customize
  • Select tab Toolbars
  • Enter Sum into the search field.
  • Select Function Sum from the **Function" list
  • Select a Target toolbar (or create a new target; e.g. MyToolbar)
  • Click the right arrow to add the function to the toolbar
  • Click button OK

If the answer is correct or helped you to solve your problem, please click the check mark (:heavy_check_mark:) next to the answer.

Thank you but I was not clear: I have the formula bar active, but I don’t like the “SUM sub menù”. I would like to insert only “SUM” in other places (like toolbar for example) as answered in the question that I have mentioned, but I am not able to do it. Coul somebody help me?

thank you very much