Medical certification management
Each Player can do sport if and only if he/she has a specific and personal and valid medical certification. This last has normally a certain validity, so it would be nice to have the capability to link the certification expire date to the medical profile of each single Player, with the possibility:
1) To receive in advance a notification to remember it is time to renew the certification. Advise period should be a parameter into the app (in weeks), while the notification should be sent periodically (e.g, each week) to the player, the coach(es) and the manager(s) until a new expire date is inserted into the medical profile of the Player.
2) To have - for each training and game - the list of Players that cannot join as their medical cerification is expired.