a CRP tests for the simultaneous occurrences of similar states in two different systems, whereas a JRP tests for the simultaneous occurrences of recurrences in two different states (where the states can be really very different).
I tried to use multi time series for JRQA but I think it doesn't work. I tried to use 6 channels of time series but it doesn't work. Could you give me an example? .. or your toolbox is bugged ?
as explained in the help of the jrp function, it is working only for two time series. but you can simply create your own JRP by multiplying separate single RPs:
(in this particulat example, do not expect to get a JRP with many points because the probability of finding simultaneous recurrences at the same times in 4 different random processes is vanishing)