Login to Pitchero as an admin https://www.pitchero.com/admin/club/7930
Select Teams > Training

Click "Add Sessions" to add a session.
Start by selecting a group or create one

Define the details; add the teams and the times and set it to repeat for as long as required

Once the session is complete mark attendees

Track and Trace:

Teams> Track and trace

Click "new export" set the dates and the teams you are interested in.

Click export.
Wait
Click Download.
Open CSV file with Spreadsheet software

If players are not in the groups they should be then:
Move them
Add them
Tell then to register then do the above

Any problems contact your team admins