How can I change the assignee, the priority and the status?

[Oussama Melki]

Hello,

I am an Admin and an Agent on a newly created Jira Service Desk Next-Gen project. However, I can't change the assignee neither the priority of created requests nor the status. 

I tried everything and still can't change anything on the view attached to this question. I can add a comment, link issues but can't do the following:

• Transition the request
• Change the assignee
• Change the priority

You can see in this attached the role I have on this project:

Can someone please help me with this as we start having a lot of requests and I can't do anything with these.

Thank you.