Wix allows you to share access to your account.  

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Inviting people to collaborate on your site

Send invitations to people you want to work with you on your site through Roles & Permissions in your site's dashboard. From here you can choose which role you want them to have or create a custom role.

To send an invite:

  1. Go to Roles & Permissions in your site's dashboard.
  2. Click Invite People.
  3. Enter your collaborator’s email address.
  4. Select the checkbox next to the relevant role/s. 
  5. Click Send Invite.