Use the Advanced tab to configure the text editing options, specify a password for the books and enble viewing from local drive. 

Security
Enable text editing and allocationTurn on or off text editing and selection in your book.
Protect book with a passwordSpecify a password that protects your book from an unauthorized viewing.
Compatibility
Enable viewing from local drive

ome browsers restrict viewing the online version locally. iSpring Flip will create a copy of the book that can be viewed from a flash drive, hard drive, CD, or DVD. Note that will increase the final output size.