How to make changes for a widget i.e., Change title, add any necessary input ect.

Ok, I give up been trying this for a while, seemed simple enough add a widget element to the theme, choose widget but then I needed to add some info to the widget. This is where I was suddenly stumped.

I expected there to be some way to access the widget settings but could not locate it, nor have I been able to locate any instructions on it.

Can you point me in the right direction for this information.

Thanks

John Overall