First in the WoL....... Dashboard, Log Browser then delete the line in the table Query Builder by clicking Remove in blue.
2) Then click a little lower on Add Query. There are a multitude of fields, here I am interested in prepot. To find out why we lacked DPS to complete a specific phase or why we have suffered the enraged the Boss.
3) In the "Spell" Add the name of the desired effect, namely the different potions
: Volcanic Power - Force of the golem - Agility of Tol'vir.