In short, no.
An Afrihost Capped DSL Data account can be connected to from up to 6 locations at the same time. The speed of the connection will depend on the line at the site you are connecting from. e.g. My Home 4Mbps Line, Your Home 2Mbps Line. We both connect using Capped DSL account X. I get 4Mbps, you get 2Mbps.
Typically you would configure your router to connect to Afrihost and then share the connection over wifi and your network. Another way to connect is to confiugre your PC to create the connection. In this scenario I can create a DSL connection from my account on my DSL line and you (who are visiting me) can connect to your own Afrihost account using your details, but over my line. This way each of us uses our own Cap. In this scenario, we will be sharing my 4Mbps line.
If you have a bundled 100GB Capped 2Mbps DSL connection with Afrihost, you get
1x 2Mbps line. This line is the physical line to your site.
1x 100GB Capped DSL. As mentioned above, you can connect to this Capped account from up to 6 sites.
In order to connect to the Capped DSL from another site, you only need to get a line for the site. This will be separate form the above bundle, but could be managed from the same Account.