Your organization profile, hubs, and officer positions are tied to one email address.
If your personal profile is associated with a generic email address, it can be confusing later on as you transition out of your PTA role since you probably want to remain a member of your current organization/hubs.
If you want to use a generic email address for your PTA position, you should create a separate generic profile to go with it. That way you can pass the profile and email address to incoming officers and your separate personal profile/hubs/email will not be impacted.
If you use a generic PTA profile and a personal one, you will need to log out of one and login into the other to switch between the two.
Note: The officer positions listed within the PTA tab are not visible to parents on your site.