As the GMAT pivots to online tests, I think we'll see more candidates looking at schools that have their own admissions tests as an alternative to the GMAT, like Manchester, Cranfield and HHL. The questions used in these tests are similar to the GMAT.

HHL has a six-hour online workshop about its test. The tutor is a senior associate at McKinsey who studied for his MBA at HHL and Chicago Booth (Interviewed at https://www.hhl.de/blog/part-time-mba-career-boost/). The workshop fee is €100, refunded if you join a HHL degree. Registration and a fact sheet are at https://www.hhl.de/event/virtual-hhl-entry-test-preparation-seminar/

I think it's a useful workshop for anyone considering any GMAT-style test and, in particular, for anyone who is feeling intimidated by the GMAT.

[Edited by Duncan on Mar 25, 2020]

Imagine if every school had their own admissions test, that would be seriously time-consuming for somebody applying to multiple MBA programs!

If someone was applying to multiple schools they would take the GMAT. All these schools would prefer people to take the GMAT. In practice, these tests are used for less traditional candidates, especially women and people who are distant from testing centres. For example, I am working with someone from a large German state that has no testing centre; the closest centre in Zurich is hard to get to.