Mark time

When the colonel has given the signal for the music to beat time, he will give the caution for the movement as above; and the lieutenant colonel will immediately give the word to the right wing to mark time.

Source: wiktionary

Next, they were ordered to converge on Bischofsburg. They had spent the morning marking time there.

Source: wiktionary

[…] the drum line is a section that needs considerable time to rehearse on its own. […] Always have members stand at attention, in a formation that makes senses […] and reflects formations/configurations actually encourted in the show […], and have them mark time while rehearsing.

Source: wiktionary

Monday noon I chased over to the Auditorium and they was only about eighty in line ahead o' me[…] While I was markin' time I looked at the pitchers o' the different actors,

Source: wiktionary