It is going on at the same time as the main action of the program.

The main action of the novel takes place in the 1970s.

"Lucas, put the main action on the large screen like I showed you."

The main action takes place outside in the high school parking lot.

The battles between the two would prove to be the main action of the war.

You see, he has spent an entire career outside of the main action.

The main action of the film was to have taken place in 2032.

The main military actions took part between 7 and 9 July near the villages south of the city.

It was obvious, however, that the main action had happened in the kitchen.

The main action takes place during the third and fourth decades of the next century.