If you want to enable online entry you can tick Enable online entry. Enter a Final Entry Date after the current date. If this date is on or before the current date online entry is disabled on the website. If you tick Member ID required, players cannot enter online without specifying their member ID.
Check Show extra items on entry form to make the extra items visible for players entering online. You can set the extra items on the tournament properties screen. This could be a banquet or a T-shirt.
In the field Max total events per player you can set up the maximum number of events a player is allowed to enter. You can also do this for single, double and mixed events.