The Drag/Drop is a grid view of your schedule. It displays a grid for each day, time slots for each field, and will display warnings if games are placed incorrectly. Warnings include: back to back games, schedule restrictions, teams coached by same person, and bracket games in the wrong order.
To place games on the grid, click a game and drag it into a time slot.
Depending on what you have setup the grid will warn you about the following situations.
If a team is playing on 2 different fields at the same time.
You can turn on warnings for back to back games on the General Info page.
It will warn you about teams schedule restrictions (teams with schedule restrictions entered will be indicted by *** to the left of the names, you can see what the restriction is but hovering your mouse over it)
It will also warn you about teams that are coached or managed by the same person and can't play at the same time.
When dragging bracket games onto the gird, you can see where the game falls on the bracket tree by clicking and holding on the game. It will also warn you about putting bracket games in the wrong order.