how can I add new members to JPD project I manage?

[IV10 Fredy Rabih]

as an Administrator a creator of a JPD project, I would like to add new members to the project 

[Nikola Perisic · Accepted solution]

Welcome @IV10 Fredy Rabih 

Go to Space settings -> Access. From here, you are inviting people to the project and assigning them roles.

[Kamila Czubaj]

Hello,
Additionally, if you want to understand the different types of users, here is a detailed article on it https://community.atlassian.com/forums/Jira-Product-Discovery-articles/The-different-types-of-users-creators-contributors-and/ba-p/2378354.