You can figure out by applying 'Remote Displacement' in ANSYS Workbench on a simple problem. Next go to 'Solver Files Directory' and open '.dat' file. It should have all the APDL commands for the operations you performed in Workbench and you will know APDL equivalent of 'Remote Displacement'.
Hi Rashiga Walallawita . You can apply remote displacement by creating a mass element at the location where you want to apply the remote force and then connect it to the supporting area by rigids for rigid behaviour and by RBE3 for deformable behaviour.