Language…
4 users online: fanfan21, Gamet2004, Jordan, Josuke Yoshikage - Guests: 67 - Bots: 179
Users: 69,784 (2,507 active)
Latest user: Kidd005

How can I place done sprites (Like the unused piranha plant) into Submaps? (Like Yoshi's Island.)

Thread title says it all. How can I do this? (If at all.)
On the run.
Make sure you have the cloud button toggled off and then you can just search for it in the All Sprite list.
Be aware that you need to use ExGFX with it and that by default without using the fix patch it has the potential to cause Vram errors since it's functional but bugy.

I think you misunderstood, as the OP is talking about overworld sprites, not in-level sprites.

As of currently there's no way to do so. Some sprites are intended for certain submaps only, so you can't really get past the bounds.

There are no overworld sprites in the section at the moment, though.
Ah yes, I did misunderstand I thought they meant the unused level sprites and adding them into sublevels, which would of been the same way as normal levels.