Checkboxes for order list

Im making a Order spreedsheed for work and I want to do the following :)

at the bottom have two separate lists (still in one file)

the first one is a Katalog

the second one the current items I need to order - the order list

i want to have a checkbox in the Katalog. After clicking it, it should automatically come up in the order list. After purchasing it I want to check the box in the order list and the item should disappear (Only in the order list and not Katalog)

I don't know if it's even possible but I would appreciate some help and tips how I can improve the process so ordering stuff is easy piesy :)