How to get ASBPlayer to display both English and Japanese Subtitle?

These are the things I have downloaded on my PC:

1. Video that already has English sub in it

2. Japanese subtitle SRT file

So what I am trying to do is to use this ASBPlayer webpage and have it display both the English and Japanese sub for me to mine sentences.

I'm able to get the Japanese sub to show by dragging the SRT file into the player. But I can't seem to get the English subtile to show at all.

Am I missing something? I've been pressing the diffrent shortcuts, but nothing is showing…