From Parallel Lines and other applicable formations.

Centers Hinge, Very Center Two Trade, and all 4 Centers Roll as Outsides Circulate 1 & 1/2; any Outsides which line up with the resulting Center Column Face In; those in the Center Column (usually 6, but sometimes 4 or 8 dancers) start a 'Grand' Pass Thru until the original Center 4 have cleared the Center and any Trailing dancers have a compact R-H setup; original Center 4 have the first dancer Left Peel Off as second dancer Right Peel Off and adjust as necessary to end as a Couple (Zag-Zig & Explode).

Usually ends in a R-H 1/4 Line or a L-H 1/4 Tag.

From Parallel R-H Two-Faced Lines:       before Sets In Motion   after Outsides Circulate 1 & 1/2 as Centers Hinge, Very Centers Trade and Line of 6 Face In   after Column of 6 start a 'Grand' Pass Thru, First Peel Left, Next Peel Right and last dancers stop in the center (done)

From Parallel 3 & 1 Lines:       before Sets In Motion   after Outsides Circulate 1 & 1/2 (to R-H) as Centers Hinge, Very Centers Trade and Line of 8 Face In   after Column of 8 start a 'Grand' Pass Thru, First Peel Left, Next Peel Right and last dancers stop in the center (done)

From an unusual setup:       before Sets In Motion   after Outsides Circulate 1 & 1/2 (to R-H) as Centers Hinge, Very Centers Trade and Line of 4 Face In   after Column of 4 Double Pass Thru, First Peel Left, Next Peel Right (done)

Notes:

• If you are an Outside, Circulate 1 & 1/2 then look to see if you line up with the Centers. Don't memorize things such as 'Trailing Ends line up with the Centers' since this will not always be the case.
• If the Outsides do not start in Tandem, they should meet with R-H after the Circulate 1 & 1/2 (same spot rule). This is important in order to put the correct dancer in front if the Outsides happen to line up with the Centers (be sure to step to R-H before doing the Face In).
• Sets In Motion can not be called if all 4 of the original Centers are facing in.
• Those who line up with the centers (for a total of 4, 6, or 8 dancers) own the center! They own the center of the set before the 'Grand' Pass Thru, and they own the center of the set after the 'Grand' Pass Thru. When no dancers line up with the center 4, the original center 4 end in the center Box.

Single Hinge & Trade [C4]: From a non-T-Bone 2 x 2. Hinge; Centers Trade; all Roll. Ends in a 1 x 4 Column.

before Single Hinge & Trade   after Hinge   after Centers Trade   after all Roll (done)

Sets In Motion Plus n [C4]: From Parallel Lines and other applicable formations. Sets In Motion but the Trailing n (1 or 2) dancers complete the 'Grand' Pass Thru, first Peel Left, next Peel Right to end between the original dancers who Peeled Off. Sets In Motion Plus 1 ends with two Lines of 3. Sets In Motion Plus 2 ends in Facing Lines.