Managers in the Premier League are involved in the day-to-day running of the team, including the training, team selection, and player acquisition. Their influence varies from club-to-club and is related to the ownership of the club and the relationship of the manager with fans. Managers are required to have a UEFA Pro Licence which is the final coaching qualification available, and follows the completion of the UEFA 'B' and 'A' Licences. The UEFA Pro Licence is required by every person who wishes to manage a club in the Premier League on a permanent basis (i.e. more than 12 weeks – the amount of time an unqualified caretaker manager is allowed to take control). Caretaker appointments are managers that fill the gap between a managerial departure and a new appointment. Several caretaker managers have gone on to secure a permanent managerial post after performing well as a caretaker; examples include Paul Hart at Portsmouth and David Pleat at Tottenham Hotspur.