Adding modules on our software

We have started to a stock, production, order, purchase and cost tracking software (php + mySQL) project for our customer. My freelancer quitted work on a point, so now we have to continue ourselves. My plan is to open to freelance tool by tool, function by function. Not all the project. The first task is to add "item details" property on a screen; The screenshot is our stock control page; [login to view URL] You can see in each line the stock details. But normally each stock has a lot of "movements" (inputs, outputs between locations). So i want to add a + button to each line, and when i click it, the movements of this stock will be shown as a acordion menu. We already made a similar thing on our order page, im sending 2 screenshots, first the "sub items" are visible, second the subitems of the first line is closed; [login to view URL] [login to view URL] I want you to add similar property to our stock page. Im a programmer for 24 years, so i have full control and knowledge about the coding side and the database structure, anyway i was already on coding this project, but we dont have enough free time to complete it inhouse. So i need to clarify some modules and open it to freelance. The project is running on our test server and i will give you all username + passwords to modify it. I want you to upload files to my server and show that it runs without problem. For now, i guess that the screenshots are enough for bidding. Please dont hesitate to send me msg and ask questions. I am always deleting all auto-responses which came before 5 minutes!:) So please first read the project detail and send your bid after this interval. Txs