Modify my project manager cms

My project manager needs several custom modifications as follows: 1. Stock section must accept different types of unit measures: linear meters , pieces , sets , square meters. 2. We have an estimate section that is available for staff members and clients but at this moment clients can only view estimates sent to them by admin or staff members. We need clients to be able to send an estimate also to admin or staff members. [login to view URL] also need some of the existing fields eliminated and added some new fields to be integrated in estimate section. These fields should have conditional roles. Because we have several final products we need our clients to see necesary fields for the right product. ( eg: Let's say we sell icecream and orange juice and we use different components for these products: icecream = water + chocolate + sugar / water + vanilla + sugar juice = orange + water + sugar / apple + water + sugar Now let's say client chooses to buy icecream. In this case client should be able to choose what kind od icecream he needs chocolate or vanilla. ) [login to view URL] our final product is made of components with different unit measures we need our project manager to generate 2 types of reports for that estimate as follows: 4.1. One report for administrator with the components used to create the final product. This report should show administrator the expense value for every component. 4.2. One report for staff members that will create the final product. This report should show only the components without the expense value. [login to view URL] case one or more components registered in stock are out of stock or the quantity is not enough to produce the number of final products requested our project manager should show an alert with a message about what component and what quantity of that component we need.