This is not a current capability of Qlik Sense Enterprise (but is on the roadmap). Qlik Sense Cloud is built on Qlik Sense Enterprise however the hub it uses is a custom solution just for Qlik Sense Cloud so the features are different. You likely also noticed that a users can upload a data file in the Qlik Sense Cloud hub but cannot in the Qlik Sense Enterprise hub. Overtime the capability will be more similar, this approach enabled us to provide the most important features to each edition a quickly as possible.
Thanks for coming back on this one. Can I please add a +1 to any list of what features people want to see added soon. With so many neat visual features in 2.1.1, allowing colours to be set by users who don't even have edit rights for instance, it seems like a bit of an oversight that this functionality was not added also.
Will keep an eye out on the future versions. For now we will probably ask users to come out of Sense and email an admin to ask for their app to be promoted. We don't want to direct users to the QMC could be confusing for them - particularly for users for whom most options are greyed out.