Remove _blank but still open new window and want to embed the zoom meeting in a middle of my webpage

hi good day.

just wanted to ask what to do if i don’t want to open a new blank page after joining? i am using the website-sdk demo and i removed the _blank from window. Open(joinUrl);. but it still opens a new tab when i click JOIN button

my additional question is what if i have a website and i want zoom to appear on the middle of the page. i plan to put sponsors on the side and a banner image on the top. but when i use the sdk demo, i cannot seem to put any display code inside of the messages.html. i so far can read that we are sending console messages.

last question. i sort of like the iframe concept but not sure if you can point me what is the workaround or alternate solution for this?

thank you