Merging two or more My Hours accounts is not possible. If you want to invite a new team member to your account with the same e-mail address they are using for their individual account, you have two options:
- they can change their e-mail address in their individual account (they can do that in the 'Profile' section) or
- they can close their individual account (in the 'Subscription' section).
Or you can invite them to your account with an alternative email address.