Like all schedules, to start with, you need to add terms to the schedule. This means adding all the godan, ichidan, and the irregular variants in the schedule. Then you need to actually go to the schedule's advanced settings and fix the quiz size so you can do as much as you want (to a point).
And to have the schedule use verbs properly, it needs to be based on a vocabulary schedule you have made (don't ask me why) that contains verbs. That's already in the settings box before you go into advanced settings. You may additionally just use "Anything I've learned" checked off, as that will bypass the particular set of words you limited to a schedule, to basically ALL the verbs you've ever learned, including ones you've only just touched on.
Either way, setting up the verb conjugation schedule properly this way will allow you to practice the quiz size you want.
if you’ve only studied one term so far, then it only has one term it can quiz you on. maybe you could try doing a bunch of focused reviews after another, or something like that? but as far as i understand it, the schedule considers a verb-form to be one item, no matter how many verbs use that form.
i think that’s probably inherent to the schedule, otherwise it’d be immediately overwhelmed by all the する verbs.
edit to add: my approach is to add just one single term per day. there are few enough items in the schedule that i’ll be done with the verbs long before i’m done with anything else.
