How to use grid in SnapChat camera?

here is snapchat and if you tap inside bar on the plus icon you have the grid and then uh you can just enable that because it can be really helpful to have the right proportions and if you're doing a bit more professional stuff or just want to make sure that everything is right um yeah then it's super useful feature and then of course you can zoom you can all you also have these two yellow lines in the middle square which is also quite helpful uh yeah so this way you can kind of calibrate your videos and yeah just discover some some better positioning yeah just just in case i'm not like a professional in here but i just discard this feature in case it is helpful like this video