Simplify the following text for a Grade 10 native English-speaking person.
Original: Instead , with the reluctant agreement of his cabinet , de Valera nominated a team of delegates headed by Vice-President Arthur Griffith , with Collins as his deputy .
Simplified: Instead , with the reluctant agreement of his cabinet , de Valera assembled a team of delegates to go in his place . The team was headed by Vice-President Arthur Griffith with Collins as Deputy .