How to sync everything, or multiple things

If I have 500 files in my Google drive, and I want to sync them all, is it really the case I have to painstakingly click each one, click 2 way sync, and in the case of folders, then click “Base Folder” ? I’ve tried the usual shift click and ctrl click to multi select, but that doesn’t seem to be a thing in Insync. Should I hire some employees to spend all day clicking Insync just so that I can have a functioning sync?