Display a value in a cell that references a value in another table
http://phpgrid.com/documentation/set_col_edittype/
e.g.
$dg->sel_col_edittype("COLUMN_NAME", "select", "SELECT
tean_id, team_name FROM Team");
$dg->sel_col_edittype("COLUMN_NAME", "select", "SELECT
tean_id, team_name FROM Team");