You can remove an item from your timeline by selecting the item and clicking on the garbage bin icon in the Inspector Panel.
You can remove multiple items at once by selecting the desired items in the Timeline (hold Shift to select more than one) and selecting “Delete” in the Inspector Panel.
Note that if you hover over a scheduled item on the timeline, a UX will pop up with the options to Collapse timeline or Remove asset. When Collapse is selected, the asset is removed and all assets on all tracks after that asset are moved to fill the space of the removed asset.
Removing items from your timeline will not delete the assets from your asset list in the Asset Panel or delete them from your Zype library; these will simply be removed from your programming timeline.