For our program, all those that did an online interview had done it through "zoom." They would be put into different virtual breakout rooms and would rotate between 3 different stations: Q/A station to ask residency - last year pharmacy students about the program, the interview itself, and another Q/A with selected current students about the area, school, transportation etc. Of course all those interviewed would meet together with an orientation session discussing the ins and outs of the program, costs, caveats, so on and so forth.
Most of those who I keep in contact with from different parts of the country have similar experiences using the zoom login account. Interview is the same as in person only you save some money expenses. That's about the cut and dry version of what to expect.