Please capitalize where necessary: older children/adults may stay at the price of eur 50 per person per night in an extra bed.
A: Older children/adults may stay at the price of EUR 50 per person per night in an extra bed.

Please capitalize where necessary: after the battle of waterloo, napoleon was late into exile again.
A: After the battle of Waterloo, Napoleon was late into exile again.

Please capitalize where necessary: select create task from the actions listing.
A: Select Create Task from the actions listing.

Please capitalize where necessary: the idea of this project is to develop and test intelligent control of power consumption in agriculture.
A:
The idea of this project is to develop and test intelligent control of power consumption in agriculture.