I didn't fully understand how to install the collection

[zxcOvosh]

Tell me how to install the collection at once, or do I need to install all the add-ons separately?

[JerriKoe]

Hey! You would have to go to each of the listed plugins repositories and follow the installation steps there. It's mostly just adding their repo to your plugins in Jellyfin and then install. Some require a bit of different, more complicated ways to install them.

Example: I'm using AniList to track the anime I'm watching. To sync that I want to add the plugin jellyfin-ani-sync.

jellyfin-ani-sync - Automatically tracks and synchronizes anime watching progress between Jellyfin and Anilist and other services.

1. Go to the repo
2. Copy the repo URL, you can find it in the instructions usually of any of those plugins
3. Go to your Jellyfin's Dashboard
4. Go to the Plugins Catalog and then click the Settings button (cog wheel) on top
5. Add a new repo by clicking the + button on the top, give the new repo a name and add the URL you copied from step 2.
6. Select the jellyfin-ani-sync plugin or however it is displayed for you (it shows up for me as Ani-Sync) and install it
7. Restart Jellyfin