Use the Button control to add a button that performs a single task or action.
To add a button
On the Appearancetab, click UI Designer.
From the Design View pane, from the Ribbon simulation, select the tab and group to which you want to add the control.
To select a group, click the group name. Create a new group, if needed.
From the Insert Controls pane, click Button.
From the Settings pane, set the action and other properties for the new button that appears on the Ribbon.