What did Greg's dad do too make sure Greg wasn't at home when Rodrick had band?

Greg's dad made sure Greg wasn't home during Rodrick's band practice by orchestrating a plan to keep him occupied. He arranged for Greg to go to a friend's house, ensuring that he wouldn't have to endure the noise and chaos of Rodrick's band rehearsal. This way, Greg could avoid the discomfort of being around his brother's friends and the loud music.