Microstation 2023: why some workflows are not available for using?

Hi Everybody,

I just have Microstation 2023 installed. From the "Customize Ribbon" window, I can find 7  workflows available by default. However, in the quick toolbar I can only select one out of 4 workflows. There are 3 workflows I don't know how to use: Admin, Modelling, Visualization. The screenshot below illustrates the issue.

Can you tell me how I can use those three workflows?

Thank you!

Sui