Jio Fibre modem guest network seprate subnet

[damole]

Hello

I would like to create a guest network with a differnt subnet so that guest users can't access my public shared folders. The only setting in the web interface that looked liked it might help is WLAN Partiton but it didn't make any difference.

System Name
reliance

Version #
SRCMTF1_JCOW414_R2.41

Serial #
RSVOTIIEM027154

Model Name
JCOW414

Any ideas?