To load the LISPs into AutoCAD, type APPLOAD in the command line. A dialog box will appear. Refer to the location of the LISP in the directory.
2. Choose the LISPs you want to load then click LOAD. You may now access the LISP by typing the command in AutoCAD.
Reference:
How to automatically load LISP routines in AutoCAD
https://www.autodesk.com/support/technical/article/caas/sfdcarticles/sfdcarticles/Automatically-load-AutoLISP-routines.html
Related Links:
AutoLISP How to Load an AutoLISP Request an AutoLISP ContactÂ