Magento 1.9 website modify

Hello, I have a website built in magento 1.9 and and I need some improvements. On this site are sold chairs, but are not sold assembled, each component is sold separately. What can not miss from a chair is the structure, therefore, the customer when entering a certain type of structure, can choose from a few options, the rest of the components, such as handles, back, tail... Now, when the customer only has the option to add 10 structures, 10 handles, 10 backsets etc., but there are cases where customers already have 2 extra structures and they want to add 2 extra handles in addition to the 10 that they bought for the 10 structures. At this time there is no possibility to add more directly, manually from the bundle product, more simple products, components of that bundle. Below I have listed more clearly what needs to be solved (what is not and should be created). To understand you should see the immage attached. =>In box T20 (the one with bundle products), if: - replace 1 to 5 (to be 5 bundle products), all values ​​in the last column (T30, T32, T34, T37) must have the following values: 5x value from 3rd left column ([login to view URL]) - only for selected values in the first column on the left. -the default values ​​on the last column on the right, if is not selected / checked in the first column (left), should be "0" -the values ​​in the last column on the right must be manually editable by adding more simple products but never below the bundle product requirements -products not selected in the first column on the left should be added manually in the last column on the right, as simple products - if you are on a bundle product and T20 = 0 (you do not want to add any bundle) then the values ​​in the last column T30-T39 = 0. In this case, the customer can add simple products to the cart by manually modifying the values ​​in the T30-T39 (right from the bundle product page) - there must be the possibility that the A20-A26 values ​​are changed independently of the no. of bundle products