Bitmaps
Add form Periods
Add panels
Add DBGridEh
Add columns to dbgrid and options
Add field names
Add cool and tool bars
Add tool buttons
Override constructor and destructor form
Call form periods
Add form close action
Close Form action
Add db objects to form
Add TbRefresh click method
Refresh periods data
Open data set
Create period class
Modify periods form
Add functioanality interfaces
Fix bug