You can view the active Blocked Dates by default when you click on View Blocked Dates. You can also customise them by selecting various filter tabs such as Block Type, From, To, Property, and Unit. You can select from the drop-down menu for each filter.
You can also click on the filter icon to have the above-mentioned filters.
When you click on Create a Blocked Date button on the top right, a window appears in which you should insert the information and finally click on Create. Then, the created blocked date will be placed on the list.
You can also click on the three dots under Action for each Blocked Date to View or Edit it.
Note that you can just view and not edit the Blocked Dates Form iCal.
You can also switch to the Archive tab to view the archived ones.
Note that you can just view the Blocked Dates under this tab. You cannot edit them.