How to add a local EPD in Tally environment?

Hello Jeremy,
I installed Tally but this “Tally Cat” is new to me. I need to try it before making any comment. Does it need to be connected to BIM 360?

I am now using BIM 360 and Tally works well with EC3. I am thinking if one does not have access to BIM 360 how it is possible to benefit from EC3?

I appreciate your comments.