First you set a condition, it can be anything if its your first time making a trigger.
In the next section is Action, this part has all the things you need to make uh... action?
Just look at each one and read the sentence it says for each. By doing this you should be able to know what each trigger does.
Ghan has said he has fixed this. Monovertex please confirm this fix. This was only a problem with people that had signatures in the upper levels like not the special members but the respected members.