POS Item Display and POS Permissions

Im very new about this POS will someone help me to find solution about this questions:

how can i display my items on POS?
i made another user that can do sales only but i log in that user it seems i had trouble with the permissions how can i permit that user to access the POS page… please help me with this…

Thank you…

Check if the user has the permission on Item and Page. You’ll also have to create a POS Profile to use Point of Sale.

i already created a POS profile … can you help me how to get a correct permission on the Item and Page??