I have created a few homebrew spells but in the bards magical secrets list I can't seem to chose them. Is there a way for this to be done or is the feature yet to be implemented ?

Update: It does work I just was trying to put it at too low a level

First of all, they must be added to a class's spell list; just a subclass won't work.

After that, it can take up to 20 minutes for changes in homebrew to reach character sheets.

Finally, you may need to "wake up" your character sheet by bumping the character up 1 level and then back down.