Mr.Akshay,

The point load at one end of the cantilever wall can be applied by using point load tools available in the software. You have to select the point load and place the location in which the load is to be applied. You can apply the point load in any direction..ex..upward or downward point load. It is very simple to apply point load in the analysis. I recommend you to go through the FLAC2D manual. You will get everything in the manual..all the best..

in manual you can find Apply xforce yforce to mechanical load at gridpoint on the model boundary

In general, in the FLAC software (2D or 3D) as Emad Maleksaeedi said, you use the command:

Apply xforce (or yforce) gp (x,y)

For example, you want to apply a force of 1 kN in the x direction at the point (x,y)=(1,1)

Apply xforce 1 gp 1 1

Hi dear singh

Via the Structure toolbar, then the node option...And finally the photo below