Do your research on the company, they have fantastic interview tips on their website. Even before applying for a position they have tips on how to get your cv recognised. Dexterity is testing to see if your suitable ro do the role and working under guidance and testing Co ordination. Online assesment tests the way your brain works and being able to problem solve and also spot inaccuracies Gallup is intense but be honest, and they are looking for a good fit to the company.. someone who wants to work, and non confrontational. Interview is about being proud of your achievements more than your skills.. Communication and tram environment so examples of how you have dealt with conflict , mistakes, difficult situations and examples of how you dealt with them. Why you applied and what you know about the company position you applied for.. Medical then, straight forward enough. Best of luck, try not to stress and trust the process.. its there to ensure your right for them and they are right for you.