I've got 4.2.8-36, the latest version that has been compiled for Raspberry Pi and Ubuntu (Intel), as obtained using "sudo apt-get" or Ubuntu's package-update applet.
That doesn't seem to have a "days of the week" option on timer recordings:
Digital Video Recorder | Upcoming/Current Recordings | Add
https://i.postimg.cc/TYgGdj4B/TVH.png
This allows you to assign a title that will appear in the list of programmes to be recorded (and in the filename), a channel (selected from the dropdown), a start date from the calendar, and a time, and likewise for stop time.
But I can't see anything which allows "every Thursday" or "every day Mon-Fri, but not Sat-Sun".
Autorecs, where you'd expect to be able to define recurring, as opposed to one-off, recordings, has days of the week, but this is only to filter out non-complying entries +that already exist in the EPG+. If the EPG is blank, you're stuffed because if you say you want a given channel, starting after a certain time and starting before a certain time, on specific days of the week, it won't find anything unless it's in the EPG.
https://i.postimg.cc/ZYryWQ0L/TVH.png
Maybe TVH doesn't have the ability to schedule recurring recordings (every Thursday) when the EPG is blank. Shame: that would be a useful enhancement.
Anyway, the need for it in my case has been overtaken by events: on Sunday night, just before the last entry in the EPG for the channel in question (Drama, on 28.2 deg Sky satellite), the EPG suddenly acquired a whole load more entries. Normally they are added one day at a time, every day; this time they seem to have been added for the whole week all in one go. Either TVH was playing up (but only for that channel and not for any others), or else the channel was very late in submitting its EPG to be broadcast OTA.