I have Adobe Premiere Elements 15 and want to access scroll options

I want to omit the blank period at the beginning and end of text that I’ve added to a video (Default Roll) and have found instructions that tell me: Using ‘Expert’, go to the main programme, select Text > Roll / Crawl options, then uncheck the ‘Start off’ and ‘End off’ and adjust to 0 frames. That doesn’t work as there are no Roll / Crawl options available that I can find anywhere. What is going wrong here?