When you're added to AcceleratorLXP, you're assigned one or more personas: Learner, Trainer, Manager, or Learning Admin. Your assigned persona determines what you can see and do in AcceleratorLXP.
The Senior Admin determines whether you also get an admin-level role and what operational permissions you're granted, if any. Operational permissions can be used to create different levels of administrators. Some examples of these permissions include the ability to manage users and competency types.