To insert a block in a certain point of the schedule structure, simply drag and drop it from the 'Blocks List' to the 'Scheduling Grid'. Holding the [SHIFT] key while inserting or moving a block would perform a more accurate operation (i.e. it will be automatically positioned exactly under the closest block from above):
Please note that the block's displayed colour remains the same as the one assigned to the first segment present; changing the block colour using the related function from the context menu is possible.
NB: Notice that when inserting the same block more than once in the schedule, only the first inserted block will correspond to the block itself; the rest of the inserted blocks are the duplicated copies (i.e. child blocks) of the main block.
Note: The blocks in the past cannot be inserted into the Schedule. The error message will be prompted if you attempt to do so.