There are two ways to delete allocations in Float.
From the allocation menu
Click Actions > Delete to remove the selected task.
From the Schedule
Right-click anywhere to bring up the bulk actions menu, select Delete, and then blast your unwanted allocations into oblivion.
💡 Here's a tip: If you've accidentally moved, added, updated, or deleted an allocation from the Schedule, you can undo the last action/s using Ctrl-Z (PC) or Command-Z (Mac). Undo is not supported for replace actions.