Hello,
That bar is displayed by the HikaMarket core.
You can customize the view which display the bar but it will be complicated to move the content to another place.
Afterwards, you could use some CSS (maybe the grid layout) and might be able to change its position but in HTML, the block must be first. And since it's a toolbar with action buttons, I do not recommend to move it ; I would rather recommend to add a validation button at the bottom but the toolbar is "always" at the top.
Regards,
Jerome - Obsidev.com
HikaMarket & HikaSerial developer / HikaShop core dev team.
Also helping the HikaShop support team when having some time or couldn't sleep.
By the way, do not send me private message, use the "contact us" form instead.