How to add reinforcements to prismatic and tapered beam sections in Midas Civil? How to assign reinforcements in RC tapered sections?

Step 1: Assign that member as beam type. (Midas, by default, will consider the line elements as beams if their local x-axis lies in the Global X-Y plane.) 

Update the elements as beam member types; refer to the image below.

Reinforcement cannot be directly assigned to the tapered sections as in other standard sections.

As a workaround, kindly create an average section (middle section) and assign the reinforcements following the above steps.