Go to the calendar by clicking on the "Calendar" button in the left hand menu, or by pressing the following shortcut: G then C.

You can set your filters in the drop-down menu called “Calendars” that is located in the top right hand corner.

At the bottom of the list of filters, click on the Add new filter button and a modal window will pop-up where you can select multiple colleagues and/or resources.

Simply click on the arrow icon next to the filter you wish to delete and click on the delete filter button.

If you wish to hide colleagues’ events just for a moment, you don't have to delete the filters you added for each of them. You can disable a colleague’s calendar by clicking the corresponding filter. To activate it again just do the same, click on the deactivated filter.