Question on Cambridge 302/Glide Nav 2 combo

Hi, any owner/users of the CAI302 and GNii out there who could answer some noob questions please? I acquired a glider using this combination, will be trying it out this Spring, so far all my knowledge is from reading the manuals many times over.

First, here is a quote from the SSA badge guide:

"Do you transfer declarations to an FR using a PDA or after-market
software? These may over-write data in FR memory and/or limit the
number of characters transferred to any FR data field. Prior to
attempting any badge or record flight, test to make sure all required data
is correctly transferred to the FR; contact software vendor(s) for
guidance if needed."

Question 1: Applying this to the CA302, GN2- Does this mean a badge task should only be electronically declared with the CA302? And no other task entered in GN2?

Question 2: How do you electronically declare in the CA302? The GNll?

Question 3: GNll menu 4, what is the function of "IGC task declaration"

Thanks for any information. JimF