Thank you for replies, This node has to be there.
Actually, B3 and B4 are same beam, I have to model this beam at point on wall such that it has joint only at end point and no continuous connection with wall....For that, i have used "no meshing" option for B4 and auto meshing for B3( so that B3 is in continuous interaction with slab) and reason I can't shift the node is that it messes up auto meshing point resulting in unwanted stiffness change from my original model(LONG STORY)
In short the node for beam joint must coincide with joint for edge of wall. Also i can't release side of wall although if possible I want to release just that point not whole edge.
Is there any feature like in SAP where we can model two crossing beams who just pass like Edit > Edit Points > Disconnect command and it disconnects points then we can connect them as per our requirement like in this example https://wiki.csiamerica.com/display/tutorials/Modeling+a+pin+connection+between+crossing+members
Couldn't find anything like this for ETABS.