Add Functions to Our Designed Parts

We need the parts in the attached figures designed such that they can achieve some specific functions. Fig. 1 - This is a track with an insert. We need the track to lock the insert in place every few millimeters apart, but with some force, the insert can still slide along the track and lock in place somewhere else. The dimensions of the track is about 10mm wide and has a 1.5mm depth. The length can be changed. Changes to the design should only be made on the 1.5mm area at the top and bottom of the track as shown in the figure. Fig. 2 - This shows the wedge and choke in a closed and open position. We need the wedge and choke to move between the two positions together. Also, there should be a spring system such that they can only be in either of the two positions and not anywhere in between (the choke either protrudes or not as seen in the figures). The parts connecting the wedge and the choke is roughly a 2mm rod. Fig. 3 - This is the same as figure 2. We need a spring system designed such that by default the release is in the position as seen in figure 2. But a person can pull it outwards, and later have it return to the default position. Fig. 4 - This is a Kensington lock slot. We need it such that when the Kensington lock is inserted and turned, the two hinge will protrude and stay that way. Only after the Kensington lock is taken out, the hinge will then hide back in their slots so that the surface is smooth. We would need the CAD (DWF, DXF etc.) and JPG files of the final design such that when we assemble all the parts, they would work as described above. Price range from $50 - $300, but definitely negotiable. If you are able to provide a working physical prototype of each part as you design it, we can pay US$50 more than the price you ask. We are not professionals, and would gladly hear your input to achieve the functions we require. Thank you for taking the time to read through.