If you are not sure of the proper etiquette, watch what others do and follow suit.

After World War II it took time to clear up the arrears of track maintenance on both lines and it was not until 1953 that the L.M.R. restored any two-hour schedules, the W.R. following suit a year later.

The wise man built his words upon the rocks / But I'm not bound to follow suit

I had a natural African American impulse to let this worldlywise middle-aged black woman's maternalism wash over me. And as a post-civil rights African American, I assumed that it was a white audience's job to follow suit.

But unless there is a Damascene conversion in the Treasury, the chances of the UK Government following suit currently look slim.

Follow suit

Meaning

Verb