When you create an activity, you choose which players of the team will take part. Invited players get a notification and declare their availability.
Steps
In the platform, select Calendar from the menu and click New activity.
On the right, under Participants, you see the team’s players. By default, everyone is invited.
To remove someone, turn off the switch next to their name.
Fill in the remaining details and click Create.
What happens next
Anyone you remove does not get a notification. In the app, they see the activity marked as not invited and can’t respond.