change rates on my profile

good afternoon, i need to change the currency with which i am working on the ad, in my chanel manager it is in another currency than booiking , and the price is very high ,. i love i can change the currency inside my extranet or through the app, someone can 


If you are talking about the ad that the customer looks at they can change this themselves depending on what currency they want to convert into.  If you are talking about the currency within your setup I don't think you can do this yourself.  Email the booking.com help team using the Inbox Icon on Extranet and let them know.