Hi Charlotte, 

It depends on what computer system you use but please take a look at the following pages which might help you -

https://french.kwiziq.com/blog/best-way-type-french-accents-windows-linux/

https://www.windowscentral.com/how-change-your-keyboard-layout-windows-10

https://www.lawlessfrench.com/faq/type-accents/