This is where you would see the plugins listed. You don't see it in mine because I have it in different spots. While you are on the widgets page, on the left hand side, look for hupso share widget. I am going to use my ultimate follow me to show you. When you click the add button, its going to open up a page where you can decide where you want to put that widget. you will also have to add all of your social network links. you will also have the option to choose which design of the share buttons you want to use. Once you are done, click on the save button.
This is how you configure the ultimate follow me widget. The same process goes for the hupso share. The difference is just the share part. Once done configuring, make sure you click the save button. This is what both plugins look like on my website.
I hope this has shed some light as to how to install and configure the share and follow me plugin onto your website. If you have any questions, please put them in the comments.