When you log into Penji check the top of your Dashboard's Header.
Here you will see the word "People"
Click on People.
Then on your right, click on "Invite people"
Add your team member's email(s) you'd like to at the top. If you have multiple emails you'd like to add, make sure you separate the emails using a comma.
Choose the level of access you'd like to give your team members.
Once you're done, click Send Invite and an email will be delivered to these people shortly.
Do note that everyone within your account will have access inside of Penji and will be able to see all projects within your account. There is no way for us to separate or allow access to your people for certain projects.