DSXchange

I have installed Datastage 7.5.1 in my pc.
Now I am involved in a project that uses Datastage 5.2.
So when I installed Datastage 5.2,I have issues getting back to Datastage 7.5.1
Can I use Datastage Multi Client Manager for this issue to be resolved?
Or is there any better method where I can access both the Datastage Versions.

Multi-client Manager should be what you require. (In earlier versions this was called Client Switcher.)

You can not have both client versions active simultaneously, since they use identically named, but different, DLL and other support files.