Actullay I manage to line them by adding alphabetic letters in each item like a,b,c,d... I just want to know if there is any way to do it... I just want to place the active products above the moderate ones...
You can sort out the item list to show items only from one category. And if you use a tablet you can choose how to place every item and category in the sales screen. You can create up to 6 different pages with different item layouts. You should look it up is quite useful, here is a link to the help article: https://help.loyverse.com/help/how-arrange-sale-screen-loyverse
Also this is the video: