Access the page of the match you want to manage;

On the match's detail page, on the right side, in the "Prematch" section, click the "Call-up" button;

In the form that appears, fill in the fields "Date", "Time" and "Location" in the "Meeting Point" section;

Fill in the fields "Date" and "Time" in the "Arrival Information" section;

Fill in the "Notes for the call" field if necessary;

In the "Select match athletes" section, choose the players you want to call up by selecting the options "C" (Called), "OC" (Out of Call), "D" (Dispensed).

If you want to add a player from another category to the squad, click the "Add Athlete From Other Level" button.

Finish by clicking the "Save" button.