As we bring in our new Squad Structure, we are also introducing clear criteria to be achieved in order to be considered to be moved between squads.  Typically there are multiple criteria, a number of which need to be met.  This gives the leeway to still progress while a swimmer continues to work on 1 weakness.  For example a certain time cycle for a kick set is required, however if you are a weak kicker you can still achieve other criteria and be considered for moving up a squad.