I'm currently working on an FEA for a frame (sketched up with the frames command). The trouble I am having is that all the elements are not joining together in the model as shown in the picture below
In some areas it adds a connector like this automatically
Is there anyway I can add that in a manual fashion?
I don't think there is a manual way to add a connection at that point.
What you need to make sure is that your sketch support lines do connect.
As FredMenage replies, there is no manual way to connect these elements.
Be sure they are connected in the Frame sketch and if still not generating connected elements in the Study, log an IR with your support.