Ok, this is not in reference to actually DJing on the night, but rather the 'running of the business'.
I am currently spending far too long on the admin/business side of things and looking at ways to make things easier. I am in the process of arranging to meet a G-Suite advisor who I know can help greatly and have automated quite a few things, but putting it out there to find out what little tips and tricks others have to make the office work less of a chore and a lot quicker. :)