Yes, DSLS  licenses can be taken offline from Dassault Systemes License Server (DSLS). This allows the user to launch DraftSight when they are not connected to the DSLS. 

Refer below link for detailed steps: https://r1132100503382-eu1-3dswym.3dexperience.3ds.com/community/swym:prd:R1132100503382:community:51/wiki?content=swym:prd:R1132100503382:wikitree:p1tSaYPySImJGBmUKXgDpA