How can I add products, which I already have in inventry, to store?

I am a long time SQ user, I used to had one store in site, but I changed format then I have several store pages in my site. 

All the products were in a same store page b4, but I did not assign many of the items to new store location when I created multiple store pages, that's mean there are products in inventory which I need to move to stores. but I can not find how...

I know the way to create new products assigning store location, but since I do have those items in inventory already, I would like to just move to stores from inventory. 

Please help!! 

I need the same information as you do. Were you able to do anything that worked?

Get your products up on your store page. Select a product, the MOVE button will appear, click it select where you want the product to move.