Open «Campaigns» section and find the one you want to stop.
Click the «Stop» button.
Please note that stopping ads, both manually and by time targeting, takes about 15 minutes. Since it is technically impossible to remove ads from websites immediately after stopping (although they will no longer be displayed on new websites), you may continue to get clicks within a short period of time.
For example, if a user opened a website and an ad had already been displayed on this page, but the user clicked on it after a period of time (at the moment when you had already stopped the advertising campaign). Therefore, it is also possible to stop ads when your balance is 100 rubles, so that you do not go negative with large volumes of traffic.