Please clarify re Value in use measurement

Dear Sir,

from the lecture it is quite clear how to calculate the value in use in terms of the calculations themselve, but could you please clarify what cash flows must be taken? can you give some example?
Are these the cash flows that we are paying to the leasing company for the asset the we use? or are these the cash flow that the asset is generating for us? then how do we find out what they are?

thanks a lot in advance for your reply,