If you want to hide certain tabs for certain users or for a presentation, this is made possible by tab labels.
For example, if you want to hide all the corpus tabs so only the important tabs are showing, you would start by labeling all the corpus tabs.
By default, all tabs without a label are shown no matter what, you need to label all the other tabs with something different from what you labeled the corpus tabs
Lastly, go to your settings in the top right of your page, click tab labels on the left and choose which tab labels you want to show. So, if you want to hide corpus tabs choose the other label.