Osmc, tvheadend and webgrabplus

hello everybody
I run osmc on a raspberry 3 B+ with tvheadend 4.3 . Tvheadend is running fine with the help of the DVB-T card tvhat. Because I want to add some IPTV channels, I would like to run my own EPG grabber ( webgrabplus) which is already running on my NAS.
How can I make the link with the guide.xml on the NAS or integrate Webgrabplus in osmc ?
Thank you for your help .
Olivier

You’ve seen these two links?
https://webgrabplus.com/documentation/installation/linux
https://www.webgrabplus.com/documentation/interact-your-pvr-software/tvheadend