Formal:
* Facilitative: This is the most direct adjective form of "facilitate," meaning "making something easier or more likely to happen."
* Enabling: Similar to "facilitative," but emphasizing the removal of obstacles.
* Supportive: Indicating providing aid or encouragement.
Informal:
* Helpful: A general term for making something easier.
* Streamlined: Suggesting efficiency and smoothness.
* Expeditious: Emphasizing speed and effectiveness.
The best choice will depend on the specific situation and the desired emphasis.