A deficit deadlift is a fantastic variation to introduce for any proficient client who is capable of performing a standard deadlift really well and would benefit from either the increased range of motion, potential increased strength and/or power, or the potential for building more muscle mass.
For a traditional deadlift, the starting position will see you set up with your hands on the bar directly beneath your shoulders, yet for the snatch grip deadlift, your arms will be further apart allowing for a wider grip.
Using personal training templates for clients is key to being a personal trainer & running a fitness business, as you are qualified to teach personal training creating templates that you understand may seem easy.