The answer really depends on the type of perfboard you are using - I assume that the perfboard you are using is the type known as stripboard, with metal connecting each hole to easily connect components, like this

If it is like this, simply put the "end" of "element 1" and the "start" of "element 2" on the same row(where the metal connects them).
However, you could be using perfboard which does not have metal bridging each hole, like this

In this case, just put the "end" of one component and the "start" of another next to eachother, and bridge the two with solder.