Assuming you went through the setup for each WEM Web console setup and added all the parts before hand.
Yeah, it is possible, and very straightforward. For me, I took the existing LBVS Using the Same IP that was for the 8284,8286,8287, and 8288. Being it’s a different Port now (443), I used the same IP I had before that was used for the WEM LB stuff for the main infrastructure components.
Added the Service Group for the members ( 443), added an LB vServer using the same IP, and added 443. Bind the SSL cert to it. I did persistence with Source IP, and did a basic monitor with an http request Get and 200 for the response code. Update DNS for the WEM LB vServer name. I did nothing special here, just a basic LB for Web setup. I took each one down to ensure the WEM Web request went to the correct servers in an outage-type setup. During the time I did this, docs did not have anything. So I ironed it out, and everything seemed to work fine. Again, it's just basic stuff here. As always, Test beforehand, though, to ensure it fits your needs in your setup.