Those Once Removed are the ends and the furthest centers. Group A is one Once Removed box and Group B is another.

Notice the boxes. You usually work with your Once Removed partner and/or the dancers in your box.

Notice how the boxes are offset top and bottom. This offset is important. You must be aware of the offset before you execute a Once Removed call so that when the call is over you will still be Once Removed and still offset in the same direction as when you started with the exception of calls that cancel the once-removed positioning.

The formation could be any kind of column. Remember that "O", Butterfly and Staggered formations are distorted columns so you may be asked to execute Once Removed column calls from these formations.

Many calls can be done from both Once Removed Lines and Once Removed Columns.

You may be asked to execute any partner or box of four call from this setup.

Notice the formation axis.