That's a great feature to add. Awesome stuff!
Today I've added the 'apply effect' arguments to popup commands. When it is set to true, the plugin will apply the effect in addition to showing the popup.
Example: you set an Item popup to show 'potion x 3', if apply effect is set to true, 3 potions will be added to party inventory so no need to add an event command to actually add the items.
Damages popups have an additionnal argument called 'Affect all'. When it is set to true, the damage effect will be applied to the whole party rather than just the player. If followers are visible, each will show a popup.