The Academy's working hours are as follows:
10.00AM - 10.00PM Mon-Fri UK Time
2.00PM - 10.00PM Sat-Sun UK Time
However as Fergus said some members do tests after hours.
Click onto your profile then in the top right of your cover photo their will be a button that you can press to change.
https://gyazo.com/7ce486fd12b2611ebace17b4e5b7e0cd
Whenever you are making an arrest you need to let them know why they are being arrested, for example the trafficking of drugs under the misuse of drugs act. If arresting someone you need to tell them their rights, which can be found in the fines and punishments document, second page.