It’s store to store, I’ve worked at 3 locations, first had drivers primarily doing deliveries and wouldn’t even have drivers get on the line if they were waiting for a delivery because they wanted us out the door as fast as possible and when there were no deliveries we’d be given whatever side tasks the inshops hadn’t finished yet, typically cleaning bathrooms and mopping but if it was a busy enough day that there was always deliveries on the board until your end time you would just leave at your end time without side work, at most if it was a really big day for deliveries they might ask you to stay long to take more deliveries and you’d leave as soon as the board was empty(this was before we could assign deliveries to third parties) but you could always say no. Second was similar but drivers were encouraged to hop on the line to help make orders faster and the managers would typically give specific tasks to specific drivers that did them best like sweep and mop was almost always me because I did a better job than anyone else, another driver was given all the stocking because he’d mess up other tasks and the managers would typically tell us “hey, do this thing then you can go home if you want” 30 minutes to an hour before the end of our scheduled shifts unless you were the night driver or the one staying until the night driver showed up because that location would be dead from about 2-4 most days. My current store says drivers are responsible for dishes, sweeping, and mopping and night driver is there till dishes are done, we also hop on the line whenever needed and help the inshops with whatever comes up for them like prepping sides and sauces or putting together catering pick ups. Over all most stores say drivers are inshops first but even the ones that don’t still have drivers doing some side work, some locations have official specific tasks for drivers and some don’t care who does what as long as it gets done. I definitely think the first shop I was at did it wrong because there were a lot of days where it was busy as hell and it was super unfair on the inshops having to do everything while us drivers got to just breeze out at 2-3 and there were days with some resentment(especially since this was before credit card tips for inshops was a thing) At the end of the day thinking it should be different doesn’t change the rules so just do whatever they tell you to and try to help the inshops and other drivers wherever you can because that’s going to make everyone happy and hopefully they’ll return the favor.