Download and install RDM+ Desktop on a computer which you want to access remotely. If you have installed RDM+ Desktop for the other client you may also use it for access from RDM+ Web.
RDM+ Desktop for Windows v. 4.20
Learn how to install RDM+ Desktop here
RDM+ Desktop for Mac v. 3.6
RDM+ Desktop works on Intel-based Macs with Mac OS X 10.4 and higher.
RDM+ Web access