HA has limited Dashboard and tab view

Hello everyone, my home’s alarm system, CCTV are integrated and controlled by Home Assistant. I was given a username and password to access HA when I moved in but when I login I noticed the overall Dashboard view is limited as if it was a customized layout.

Example I couldn’t create a new Dashboard because the “setting” button is not available. Same goes with missing “Add integration” which should appear at the bottom right corner.

May I know is there any way I can set the HA to the normal default view so that I can ingrate other smart devices?

Thanks in advance.