Monograph type and Acess Date for Eletronics

Ive just downloaded the newest version of JabRef and I cant find the type Monograph or the field where Im supposed to out the Acess Date in the electronic.
How can I find them ?
Thanks

Hi,

Electronic has the field urldate in the optional fields tabs.
You can also customize the BibEntry types under Bibtex-> Customize entry types.

Regards
Christoph