Who should create IG account?

Hello. I was offered a job. The company has a business FB page, but doesn’t have an IG account and needs one. My question is: who should create it? Should I do it on my private mobile using my own e-mail? I know I can create it through my own mobile, but I plan to work for this company for 1-2 years only and I’m worried that if one day I quit, this will result in troubles passing the account to a new person. I heard that IG tracks the first user’s mobile IP and if anybody tries to log in from another mobile, I will need to accept their logging in and my e-mail will still be connected to this account. What should I do?