Tvheadend

You need to also create a fake find_tv_grabbers script with the name and location to your grabber for it to show up. See this

HTH

Ok, I've seen there is something needed for "declare" the grabber.
So i've visited your link and I created a file named "tv_find_grabbers" located in /usr/bin/ with this inside:

#!/bin/sh

#set to the location of your 'tv_grab_file' script
my_grabber_script="/usr/bin/tv_grab_file"

echo ${my_grabber_script}|XMLTV File Import

I expeted to have the "Module:" appear with "XMLTV File Import" under the arrow.
But, no. So i've try to execute the tv_find_grabbers manualy, and i've got an error message "/volume1/video/XMLTV/tv_find_grabbers: line 4: XMLTV: command not found"
Then, i have modified it like this:

#!/bin/sh

#set to the location of your 'tv_grab_file' script
my_grabber_script="/usr/bin/tv_grab_file|XMLTV File Import"

echo ${my_grabber_script}

When i execute it manualy, i have:

/usr/bin/tv_grab_file|XMLTV File Import

I think it's all right , but after a CHMOD 0777 , CHOWN root:root , moved it in /usr/bin/ and TvHeadEnd restart, then nothing's better: Always no "Module" appear.

Let me be clear:
I don't say i have the "Module" menu with only "Disable" front of it and no grabber to choice.
I say i have not even the word "Module:" in the interface and no more the arrow for choicing the grabber (like you can see in the capture in my first post.

That's why there is something i don't understand
A little bit more help please.

I think you need to replace echo with printf

try:

#!/bin/sh
printf '/usr/bin/tv_grab_file|XMLTV File Import\n';
exit 0;

sorry, byt nothing better:

Still have no Module DIV

I don't know if it's important but it is installed on a Synology DS218+...