Munia Manage more data sheets

WE activation of Munia allows to manage more data sheets with one program.Click File-> Data sheets on menu bar o press F12 key.
A form will open showing on the left all data sheets present. At the first start of Munia a data sheet named "Munia" will be created.
On the right there are five buttons with the following functions:

Select	Make data sheet active
New	Create a new data sheet and puts it on the list.
Edit	Change the name of the selected data sheet.
Delete	Delete the selected data sheet and all the deadlines of that data sheet.
Close	Close form.