SOLVED: Where do I create and managed this fold and unfold rows?

[HelleRaun]

Where do I manged this fold and unfold (+ and -) in this excisting Excel.? I have not made the Excel myself and I do not know how to create this funktion or how tó change them.

[#2 · Accepted solution]

@HelleRaun 

It's a so-called outline, probably with subtotals.

Activate the Data tab of the ribbon. You'll find the Subtotal button in the Outline group.

[#3]

Found it. THANK YOU