Setting Up Chronolator Documents
The Chronolator toolbar doesn't have all its buttons

Chronolator only puts buttons on the toolbar if they can do something useful in the current document - for example, since the only thing you can do with a fresh Composite Chronology is to import tables into it, the only buttons are Import Tables and Help.

Having said that, Word hides buttons from the toolbar or ribbon if your window is too small. To get them back, just widen or maximise the window.