How do you apply abilities to another character?

[WeAreNotTwoGoblinsInACloa]

I'm struggling with the HLO In Play options. I'm in a session, on the stage, characters added, in tactical mode. I can open an individual sheet and click on abilities (such as an attack) to roll them, but I don't see any targeting. I see no way (for example) to have an Akata roll an attack against a PC. I just have to roll and then manually apply the results to the PC and then manually do a Fort Save versus disease on the PC if the bite hits.

I also don't see a way to properly use special abilities. A gnome bard PC has Bardic Performance. I can track uses per day on the sheet, but I don't see a way to use the performance to automatically apply a buff to other characters. Similarly, I see no way to apply a spell's results to anyone.

I know I must be missing something. Any pointers?