There’s been no affiliated minor-league baseball at all in 2020 due to the novel coronavirus pandemic. Players under contract to MLB teams have either been part of their team’s alternate site workouts, have played for independent league clubs, or sat out the 2020 season.
When minor league baseball (presumably) resumes in 2021, it will not look the same as it did previously. The pandemic is only one of the reasons; Major League Baseball had made it clear that they wanted a change in the way the minor leagues were run. They painted it as “efficiency” when what they really wanted was more control.