Creation of organisations on Gitlab instance for Geography & related

We would be interested to mirror repositories from our three organisational instances on Github:

Department of Geography https://github.com/camunigeog/

CAMPOP (The Cambridge Group for the History of Population and Social Structure) https://github.com/campop/

Scott Polar Research Institute (SPRI) https://github.com/spri/

If you could create these with the names as above that would be great.

As discussed at the meeting at Engineering, we regard these as being sufficiently 'top-level' - Geography is obviously a Department, SPRI is part of Geography but well known in its own right, and CAMPOP is a joint initiative of Geography and History so should not be under either.

Could you give a quick pointer as to how we can set up mirroring of a repo from Github to Gitlab? (We may in future want to reverse that, but for now we will keep the Github repo as the canonical repo.)