The answer to this question is available here
https://hummy.tv/forum/threads/quick-start-guide.1301/#post-28409
You need to install the package. Once you have it installed its execution depends on what sort of thing it is. Thus the package notes which B;ack Hole has provided you with a link.
To install a package the easiest way is to open the Web Interface and click on the icon that is labelled "Package Management"
To use the Web Interface the first you first needs to install some custom firmware.
Therefore the answer to your question is:
1/ Install custom firmware
2/ Install the full Web Interface
3/ On the Web Interface, via Package Management, install the package
4/ To run what you have installed read the package's notes
For more detail see the links that Black Hole has supplied to you plus Black Hole's Quick Start guide
EVEN IF YOU READ NOTHING ELSE, READ HERE (click) Contents Post 1: Introduction (click) Post 2: Installation Step by Step (click) Post 3: Configuration (click) Post 4: FAQ (click) Introduction Custom Firmware - What Is It? Amongst other facilities, the Custom Firmware (CF, or CFW) provides...
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You don't need custom firmware to place something in the schedule for the BBC Red Button channel (LCN 250). This channel was also on your DTR-T1010 unless you hid it, which these days doesn't do a very good job of hiding it. To add an entry to the schedule for that channel you can go into the schedule and add one manually. The youview boxes don't allow you to add an entry for the BBC Red Button to the schedule, but who would want to? However, the youview boxes don't allow you to add an entry to the schedule for BBC RB 1. I know which I prefer and it's not youview!
There are also various packages which depending on what you have adjusted their settings to , can also add reservations to the schedule but I'm not going to go through them and list which ones they are!
If you are still puzzling on what triggered the schedule entry then there may be some clues to be had by considering the other details of the reservation.
Yes, but if you have installed a package that can create it then you may find that it comes back.