You may have more than one table dialog box (or node dialog box) for the same node. This can be confusing if you are not careful, so it is not recommended unless you need it (Netica will ask you beforehand).
However, in some situations it is very useful. Each dialog box stores all the settings for its node and doesn’t lose them when you make changes in another node dialog box or to the node itself (unless you press the Reset button). So you can have several different settings for a node, one set in each dialog box, and alternate between them just by pressing the Apply button on the dialog box of choice. Of course you can do all kinds of other operations in between (such as compiling the net, saving it to a file, making queries, undoing an operation, etc.).
You open multiple dialog boxes for a node in the same way as you open a single dialog box. Just do the action repetitively without closing the previous dialog boxes first, and answer ‘no’ to the question of whether you want to bring the existing dialog box to the front.