Hi guys, 

i searched the forums quite a bit but didn't find any solution to the problem stated in the title. I created a homebrew race, that grants an ability score increase. What would i have to do, to enable said race to have the option to customize that ASI according to tasha's rules? (I do own the full TCoE on DDB.)

Thanks for your help!

I don’t think you can do this with a home brew race. I think the Tasha’s options only work for official races on DDB. Unless there is a setting in the home brew section to toggle it on.

your only option would be change it in home brew then Select the race. 

You can't.  You can give homebrew species the ability to pick generic bonuses instead of giving them fixed bonuses, but there's no way to enforce picking two different bonuses for the usual +2/+1 spread.  You just have to tell players to use the honor system and be good.  Or design your homebrew species to only need one bonus.

Those options are programmed directly onto the races themselves as “replacement features.” That’s how they interact with the “custom lineage” system. But, like the others said, AFAIK there is no way for us to get them to work exactly as they do for the official races.

Thank you all for your answers, people! I'll try to change my homebrew race to pick generic bonuses.