how to cancel SAP BO mobile password and save BI password

hi everyone,

The problem:

1.How to cancel SAP Business Objects Mobile Appication password(My version is 5.0.2)?

   When I  connect BI ,The Message:"

   You have to set up the password to BI platform connection is established.

   You can use a password to protect offline data. Whether to continue?"

   I have to set this, I don't want to set up, how to cancel.

2.How to save the password of BI on mobile devices?

   When I save the password of BI on mobile devices error message:

   Your BI security policy does not allow you to save the password.

   How to set up the BI security policies allow save password?

Thanks.