As a team manager you will only be able to change certain team data once your team request has been sent.
This means you can set a commercial suffix during the season once (if not already set when creating a new team) - all other data will be frozen. In case you want them to be changed please send an Email to firstname.lastname@example.org.
See the animation below for information about the process.
When editing a team you can also add new players or remove existing ones that are not yet confirmed to extend or modify your roster.