Astrometry (ANSVR) Local Solver - location of software and index files

I’ve just installed Ansvr on my laptop so I can blind solve outside without an internet connection. I followed the instructions at ansvr - Astrometry.net Local Plate solver for Windows. At the ‘Select Destination Location’ stage I chose my E: hybrid drive rather than my C: solid state drive to avoid filling this up with the software and index files. However when I got to the index file download stage there was no option to choose an alternative drive and now the index files have virtually filled my C: drive. Is it possible to move the index files to my E drive and point the software to them to free up space on my C drive ? If so what do i need to do ?

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may help