There are two types of requests to join a new Jellyfish account. You may already be a member of Jellyfish or you may not have a Jellyfish account at all. Either way, once an owner or admin of an existing account adds you to their list of employees, an email is sent to you including an invitation code.
For existing Jellyfish members, you will need to login to your account and go to Main Menu and select "My Profile".
Once in "My Profile" the user will see an "Accept Invite" button at the bottom of the page. Clicking this will prompt a box to appear where you can type in the invitation code received in the email.
After the invitation code has been submitted, the user will now be able to go to the "Menu" > "Switch Sites" and select the new Jellyfish Retail Account!
If your new employee is not a Jellyfish user, see how adding them to your account will look here.