How do display a "+" or "-" sign when hiding columns?

[DTI Tustin]

How do display a "+" or "-" sign when hiding columns that allows someone to
click on the + or - as a shortcut to hide or unhide cells?

I want to hide my column and have them click the - sign to unhide.

 

[Franz Verga]

How do display a "+" or "-" sign when hiding columns that allows
someone to click on the + or - as a shortcut to hide or unhide cells?

I want to hide my column and have them click the - sign to unhide.

Select the columns you want to hide, then menu Data, Group and structures,
Group


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(I'm not sure of names of menus, options and commands, because
translating from the Italian version of Excel...)

Hope I helped you.

Thanks in advance for your feedback.

Ciao

Franz Verga from Italy