Navigate to the Bottom Navigation Bar and select the tab of the desired view.

Select the settings icon against the view name, and select Lock View in the list that opens.

This will lock your view, disallowing you to navigate or switch modes.

You can still navigate within your Free View, leaving your locked view safe from any accidental change in angle/zoom/mode change etc.

Navigate to the Bottom Navigation Bar and select the tab of the desired view.

Select the settings icon against the view name, and select Unlock View in the list that opens.

Your view will be navigable once again