I just entered and saved a new item. It does not show in the grid

[Lucy2]

I just set up a new item and saved it. When I go to the grid it is not there

[VanKalkerFarms]

you have to add items to the grid individually.  

https://squareup.com/help/us/en/article/5404-create-and-manage-items-with-square-point-of-sale

see the section "Set up your item grid on a tablet"