Snapshot/btrfs questions

hi

brand new manjaro gnome install, 5.15, btrfs, all up to date

1: how do i prevent manjaro from automatically making a snapshot every time i update? id prefer to do it manually

2: which process or service is doing the btrfs maintenance, e.g. deleting old snapshots etc, and how do i disable it ?

3: if i have a separate luks encrypted drive in my system, loaded via crypttab/fstab, could i store the snapshots on that drive, and if so would those snapshots be available from grub?

thanks

https://wiki.manjaro.org/index.php/Btrfs