In Replicam you can draw an entity with reference to some point. To draw the entity use following steps.
Select the entity from to be drawn from 'Insert Entity' toolbar or Insert menu.
Press 'Ctrl + R' for selecting reference point.
Select the reference point. (See above)
Then enter values in of Dx and Dy in Input toolbar which will work as distance from that reference point in X & Y coordinate.
Then draw desired entity with this point.