When sending a model from 2c8 Lite via the maintenance flow button the model is sent to a 2c8 Modeling Tool user that has permission to accept drafts from 2c8 Lite.
The model shows up in the dashboard of the 2c8 Modeling Tool user in the box "New models in 2c8 Lite". The 2c8 Modeling Tool user double clicks the model and gets to decide what repository to place the model in, or to reject the draft. The image below shows the interface in 2c8 Modeling Tool.
It's up to the user of 2c8 Modeling Tool to place the model correctly in the repository they choose, for example as a breakdown from another model in the repository. They also need to add maintenance roles to the model. If you want to read more about how to set maintenance roles in 2c8 Modeling Tool, check out this FAQ: What are maintenance roles, and how do I set maintenance roles for models?