Backup Webmaster

I have a number of various websites on my Homestead account.

The main one I have is for my senior's club where members have the URL to access a wide variety of information.

The Executive want me to have a backup to cover if I become indisposed.

The backup would also have to learn Homestead from Square 1, and I do not have time or the inclination to be a teacher.

Am I allowed to share my account logon and password so the backup person can access my website and do updates?

I prefer not to do this as there are several other unrelated websites on my account that I want to keep confidential.

Would it be preferable that the club opens a new Homestead account in its own name and the new webmaster then builds a new website from scratch like I have done?