I am trying to see if the cnc machine will work for me

I have been messing around with easel and I am trying to make a coral frag rack with easel and can not figure it out? I am new to this and on the edge of buying or not. Can anybody tell me if there is a way to make the slots in the pictures attached?

Bread and butter work for X-Carve. If you can design it in Easel you should have no problem carving it in cast acrylic.

Rounded corner rectangles which if you get really stuck doing can be done by combining a circle with a rectangle.

Take a look at inscape too (A free vector drawing program).
For more complex shapes it may be easier to model it in inkscape and import it to easel