Command button to change picture link

I got an .xlsm file where 3 command button are there. Caption name of those button are "income statement period 1", "income statement period 2" & "income statement period 3". value of the statement are changing while pressing the button. it seemed that snapshot is a picture pasted as link which is changing according the period. VBA project is password protected.

Can I have the help how the code is written plz