This is STRAIGHT out of The Official Team Manual page 28. In the past 2 weeks we have had a lot of issues with this. It's not an option at 8:30pm to go to the 2nd table IF there is a table available. You should not be going to 2 tables before 8:30. You are there to support your host locations!!

SPLITTING MATCHES A team match is normally played on one table. Occasionally, lengthy matches make it logical to split a team match onto a second table, if a second table of the same size is available. If the fourth match has not started by two hours after the official League start time, teams should put up their next player and start play on a second table. The fifth match would then be played on the first table that becomes available. If the fifth player is not present, a forfeit cannot be called until the fourth match has concluded. A team is subject to penalties if it deliberately prevents a second table from being available, or resists using the second table to split the match. The option to split matches can only be waived if both teams agree to complete the match on one table.