I am a new salon owner, and as a new business owner so

Hello,

I am a new salon owner, and as a new business owner so I am very paranoid about allowing individuals access to certain things, namely my website. Currently clients are able to make appointments online, but what about the stylists making appointments manually?? is there a way to not give them access to my website back end but still allow them to make there own appointments? Maybe a password protected page? I need this ASAP! Thanks!