Only someone with full BBO Director rights can host and direct Tournaments, and only BBO themselves can grant full tournament directing rights. However anyone with full Host and Direct rights can delegate TD privileges on a particular tournament.
A delegated TD has all the same rights as a BBO Director for that tournament. This includes adjusting scores for improperly completed boards, usually hands that were averaged because the round ran out of time.
When you have been delegated to TD a competition on BBO you will have an extra “Director” tab on the right hand side of your screen when you log in to BBO. The Director tab is below the existing “Messages”, “People”, “History”, and “Account” tabs.
When you click on the “Director” tab, you will have two sub tabs at the top of the Director panel ; “Running Tournaments” and “Pending Tournaments”.
Until the tournament begins there will be nothing in the “Running Tournaments” panel except the message “You are not TDing any running tournaments”.
Click on the “Pending Tournaments” label.
You should see the tournament.
Click on it for a menu of options. Among other things, you can edit the tournament settings.
When the tournament starts it will disappear from the “Pending Tournaments” panel, and appear under “Running Tournaments”.
When you click on it now there will be a new list of options.
The tournament will remain under “Running Tournaments” for 20 minutes after the last board finishes to allow for corrections.
Record the web address of the tournament's results for future reference.
When a player calls the TD (Menu - Call Director) a message will appear on the bottom half of the Director’s panel. Click on the message gives you the option to “Accept” or “Delete”. Clicking either will remove the message, but if you click on “Accept" BBO will bring you to that players table.
BBO have provided a useful guide for TDs. https://doc.bridgebase.com/Help/Guide_for_BBO_TDs.pdf
The first 2 pages largely refer to functions not available to a delegated TD.
Substitutions & Replacing sitouts
Caution : If replacing the sitout with two real players, make sure that you replace both players in the pair within the same round. If you have only one of the sitouts replaced when BBO moves to the next round it will probably crash.
Replacing an existing player with a substitute can be done by Clicking on the tournament, then "Show tables" and then clicking on the players name and choose one of the "Substitute options".
You can not do this if you are replacing a sitout. To replace a sitout click on the tournament and choose substitute from that menu. Then enter "Sitout" as the player you want to replace, and enter the BBO ID of the sub. Repeat for the other person in the pair.