You may include personalized call to actions & watermarks in the video that you optimized to for your YouTube channel.   If you do this, you must share a second video where you do not use YouTube specific call to actions or interactive phrases such as: like, comment, subscribe or anything else that refers to other videos on your channel.  This will be to be uploaded separately from the campaign and will not need to go live on your YouTube channel.

Always check with your brand contact for specifics regarding personalization.