Adding arrows to Highlight film in imovie on my ipad
I would like to add arrows (and/or graphics other than text) to highlight action in recorded sports films in iMovie (on my iPad's version of iMovie). I know this is possible in desktop version but I just have an iPad Pro. Is this possible or do I need another application? Or not possible solely within iPad application? Thank you.
iPad Pro Wi-Fi, iOS 11.2.6