Here is the rotation for the 3 table duplicate teams

Team A: A1-A4
Team B: B1-B4
Team C: C1-C4

Session #1 - 16 deals/table, board #s 1-24:
Rotation for Round #1 is:
Table #1 - A1-A2 vs B3-B4 - bd#s 1-8
Table #2 - B1-B2 vs C3-C4 - bd#s 9-16
Table #3 - C1-C2 vs A3-A4 - bd#s 17-24
Rotation for Round #2 is:
Table #1 - A1-A2 vs C3-C4 - bd#s 17-24
Table #2 - B1-B2 vs A3-A4 - bd#s 1-8
Table #3 - C1-C2 vs B3-B4 - bd#s 9-16

Session #2 - 16 deals/table, board #s 1-24
Rotation for Round #1 is:
Table #1 - A1-A2 vs B1-B2 - bd#s 1-8
Table #2 - C3-C4 vs A3-A4 - bd#s 9-16
Table #3 - B3-B4 vs C1-C2 - bd#s 17-24
Rotation for Round #2 is:
Table #1 - A1-A2 vs C1-C2 - bd#s 9-16
Table #2 - C3-C4 vs B1-B2 - bd#s 17-24
Table #3 - B3-B4 vs A3-A4 - bd#s 1-8 

In case there are 24 deals because of time left

Rotation for Round #1 is:
Table #1 - A1-A2 vs B1-B2 - bd#s 1-4
Table #2 - C3-C4 vs A3-A4 - bd#s 9-12
Table #3 - B3-B4 vs C1-C2 - bd#s 17-20
Rotation for Round #2 is:
Table #1 - A1-A2 vs C1-C2 - bd#s 9-12
Table #2 - C3-C4 vs B1-B2 - bd#s 17-20
Table #3 - B3-B4 vs A3-A4 - bd#s 1-4