Hey! I'm trying to add a collection to a certain gamemode/tab, but it seems it isn't adding anything, any reason as to why this happens? Is this the expected behavior? As well as some maps that are within other collections inside a collection (for a gamemode) are not displaying, I have no idea why this is happening. Thank you!

Ah right.
I fixed the first mentioned issue.

Not sure though what you mean by the second one. I've sent you a friend request so you can explain further

Alright!

I can't use the !sdm command in Homicide (488953849)

Same goes for Hidden I.R.I.S (3047746641)

These gamemodes might interfere with the chat hooks.
Have you tried the console command sdm_open?

With sdm_menu it works. Only the chat command dose not.

I also have a question. Do you happen to know if there is a way to dynamically enable or disable Workshop-addons?

There is none from within a gmod addon. It would be a great addition though.
There are ways for external apps to do it but I haven't really looked into it.

For the sdm command issue I recommend using the console command in those gamemodes. You can bind it to a key using the console command 'bind <key> sdm_open' or use my custom commands menu addon to use it through a GUI

sdm_menu works! Thanks very much

What dose unused mean? In what way are they unused. I would like to get rid of them or assign (which did not work?)

There should be tooltips popping up when hovering over the tabs. Unused means the addon is assigned to a gamemode but not installed on the server, as far as I remember

So does this addon subscribe to the selected addons or does it just temporarily download them like Addon share?

No. Addons can't force subscribe players to anything. This addon makes players download the addons and use them while they're on the server. When they leave the files are still there but they can't use them in singleplayer. It's like a second memory for addons which is only accessed when playing on servers that have those addons installed