How to assign a tooltip at a macro button added by customize ribbon in ms excel?

问题

I want to assign a tool-tip to a macro button added by customizing ribbon in options at file tab in MS Excel.

I know the userform option in vba window under insert menu allows to add tool-tip for buttons added by userform, but I want to know Can I not add tooltip for macro button added at any of the default tab in ms excel?

See the screenshot

来源：https://stackoverflow.com/questions/32931939/how-to-assign-a-tooltip-at-a-macro-button-added-by-customize-ribbon-in-ms-excel