How to remove backup volumes using Smartware?

Please help a beginner.  I want to backup my current files and allow the program to run for 3 months.  Now to protect against fire,  I want to move the external drive to the bank safety deposit box and start a new backup on a second drive.  In 3 months I want to rotate the drives, bringing the first one home.   Do I simply allow the first drive to “catch up” or can I delete the old backups first.  If so, do I delete the WD_Smartware folder first?  How does the new folder smartware.swstor get set up.  Would appreciate any help on how to go about keeping one complete backup in a safe place.    Arnie49