The easiest of such dances have dancers do-s--do new neighbors as the last part of B2.
Excellent exampes are Small Potatoes by Jim Kitch and Simplicity Swing by Becky Hill
(
http://www.dancerhapsody.com/handouts/danceseasycall.pdf)
Then comes dances where an out of foursome do-si-do occur somewhere else in the dance, one
of the earliest examples (and a very good example) being Al's Advice by Paul Tyler:
1. Almd R N 1+1/2
2. Left shoulder dsd next N
3. With orig Ns: cir L 3/4
4. Sw pt
5. Long lines: fwd & bk
6. 1/2 W ch
7. Bal pt (across); pull past pt by R hd; pull past N by L hd!
8. Bal pt (across); pull past pt by R hd; pull past N by L hd!
Alternative for 7&8:
Bal pt; four changes of gd R & L around minor set, st pt R hd
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