Here is how to use the travel route animator in MEP. It is kind of a cludgy travel route animation solution, but it does the basic job. By far, I prefer the Roto Pen animator as it has the ability to use google maps, has many more really nice icons, more flexibility and on, but it cost more to acquire.
George
ps, I really don't use the MEP animator because I don't like it and I don't like the quality of the results.
I just remebered that Terrypin had once suggested a travel route animation approach and I think it was free. You may want to look at some of his answers on the topic to see what it is.